Search a number
-
+
18142429337 = 131138491827
BaseRepresentation
bin10000111001010111…
…111000000010011001
31201211101011220100022
4100321113320002121
5244123430214322
612200131120225
71211405050664
oct207127700231
951741156308
1018142429337
11776aa2375a
123623a43075
1319318ab5b6
14c417046db
15712b3e942
hex4395f8099

18142429337 has 4 divisors (see below), whose sum is σ = 18280921296. Its totient is φ = 18003937380.

The previous prime is 18142429301. The next prime is 18142429343. The reversal of 18142429337 is 73392424181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18142429337 - 222 = 18138235033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18142429537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69245783 + ... + 69246044.

It is an arithmetic number, because the mean of its divisors is an integer number (4570230324).

Almost surely, 218142429337 is an apocalyptic number.

It is an amenable number.

18142429337 is a deficient number, since it is larger than the sum of its proper divisors (138491959).

18142429337 is a wasteful number, since it uses less digits than its factorization.

18142429337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138491958.

The product of its digits is 290304, while the sum is 44.

The spelling of 18142429337 in words is "eighteen billion, one hundred forty-two million, four hundred twenty-nine thousand, three hundred thirty-seven".

Divisors: 1 131 138491827 18142429337