7865090442 has 160 divisors (see below), whose sum is σ = 20233027584. Its totient is φ = 2260288800.

The previous prime is 7865090399. The next prime is 7865090459. The reversal of 7865090442 is 2440905687.

It is a happy number.

7865090442 is a `hidden beast` number, since 78 + 6 + 50 + 90 + 442 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5204467 + ... + 5205977.

Almost surely, 2^7865090442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7865090442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10116513792).

7865090442 is an abundant number, since it is smaller than the sum of its proper divisors (12367937142).

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

7865090442 is a wasteful number, since it uses less digits than its factorization.

7865090442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1677 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 7865090442 is about 88685.3451366121. The cubic root of 7865090442 is about 1988.6937415344.

The spelling of 7865090442 in words is "seven billion, eight hundred sixty-five million, ninety thousand, four hundred forty-two".