7823906641 has 4 divisors (see below), whose sum is σ = 7825792000. Its totient is φ = 7822021284.

The previous prime is 7823906639. The next prime is 7823906681. The reversal of 7823906641 is 1466093287.

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 7823906641 - 2¹ = 7823906639 is a prime.

It is a super-2 number, since 2×7823906641² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7823906591 and 7823906600.

It is not an unprimeable number, because it can be changed into a prime (7823906681) 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, 936441 + ... + 944758.

It is an arithmetic number, because the mean of its divisors is an integer number (1956448000).

Almost surely, 2^7823906641 is an apocalyptic number.

It is an amenable number.

7823906641 is a deficient number, since it is larger than the sum of its proper divisors (1885359).

7823906641 is a wasteful number, since it uses less digits than its factorization.

7823906641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885358.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 7823906641 is about 88452.8498184202. The cubic root of 7823906641 is about 1985.2165474259.

The spelling of 7823906641 in words is "seven billion, eight hundred twenty-three million, nine hundred six thousand, six hundred forty-one".