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182126231407 = 199915207193
BaseRepresentation
bin1010100110011110010…
…0011011111101101111
3122102002200122011102001
42221213210123331233
510440443303401112
6215400113113131
716105154265331
oct2514744337557
9572080564361
10182126231407
117026a56731a
122b3698587a7
13142362b7c43
148b5a353451
154b0e202c57
hex2a6791bf6f

182126231407 has 4 divisors (see below), whose sum is σ = 183041438800. Its totient is φ = 181211024016.

The previous prime is 182126231401. The next prime is 182126231429. The reversal of 182126231407 is 704132621281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704132621281 = 893378823757.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-182126231407 is a prime.

It is a super-2 number, since 2×1821262314072 (a number of 23 digits) contains 22 as substring.

It is the 426763-rd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (182126231401) by changing a digit.

It is a nontrivial repunit in base 426762.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457603398 + ... + 457603795.

It is an arithmetic number, because the mean of its divisors is an integer number (45760359700).

Almost surely, 2182126231407 is an apocalyptic number.

182126231407 is a deficient number, since it is larger than the sum of its proper divisors (915207393).

182126231407 is an equidigital number, since it uses as much as digits as its factorization.

182126231407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915207392.

The product of its (nonzero) digits is 32256, while the sum is 37.

Adding to 182126231407 its reverse (704132621281), we get a palindrome (886258852688).

The spelling of 182126231407 in words is "one hundred eighty-two billion, one hundred twenty-six million, two hundred thirty-one thousand, four hundred seven".

Divisors: 1 199 915207193 182126231407