6442860492 has 18 divisors (see below), whose sum is σ = 16286119668. Its totient is φ = 2147620152.

The previous prime is 6442860469. The next prime is 6442860493. The reversal of 6442860492 is 2940682446.

6442860492 is a `hidden beast` number, since 64 + 42 + 8 + 60 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (6442860493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89484138 + ... + 89484209.

It is an arithmetic number, because the mean of its divisors is an integer number (904784426).

Almost surely, 2^6442860492 is an apocalyptic number.

It is an amenable number.

6442860492 is an abundant number, since it is smaller than the sum of its proper divisors (9843259176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6442860492 is a wasteful number, since it uses less digits than its factorization.

6442860492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178968357 (or 178968352 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 6442860492 is about 80267.4310788629. The cubic root of 6442860492 is about 1860.7709152590.

The spelling of 6442860492 in words is "six billion, four hundred forty-two million, eight hundred sixty thousand, four hundred ninety-two".