2056642490 has 48 divisors (see below), whose sum is σ = 4494362112. Its totient is φ = 663649536.

The previous prime is 2056642487. The next prime is 2056642529. The reversal of 2056642490 is 942466502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30602 + ... + 71061.

It is an arithmetic number, because the mean of its divisors is an integer number (93632544).

Almost surely, 2^2056642490 is an apocalyptic number.

2056642490 is an abundant number, since it is smaller than the sum of its proper divisors (2437719622).

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

2056642490 is a wasteful number, since it uses less digits than its factorization.

2056642490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101711 (or 101694 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 2056642490 is about 45350.2203963773. The cubic root of 2056642490 is about 1271.7046755319.

The spelling of 2056642490 in words is "two billion, fifty-six million, six hundred forty-two thousand, four hundred ninety".