2921902392 has 64 divisors (see below), whose sum is σ = 7642252800. Its totient is φ = 929980160.

The previous prime is 2921902391. The next prime is 2921902409. The reversal of 2921902392 is 2932091292.

It is a self number, because there is not a number n which added to its sum of digits gives 2921902392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921902391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14659 + ... + 77837.

It is an arithmetic number, because the mean of its divisors is an integer number (119410200).

Almost surely, 2^2921902392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2921902392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3821126400).

2921902392 is an abundant number, since it is smaller than the sum of its proper divisors (4720350408).

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

2921902392 is a wasteful number, since it uses less digits than its factorization.

2921902392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63276 (or 63272 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 2921902392 is about 54054.6241500207. The cubic root of 2921902392 is about 1429.6242336713.

The spelling of 2921902392 in words is "two billion, nine hundred twenty-one million, nine hundred two thousand, three hundred ninety-two".