2851688490 has 32 divisors (see below), whose sum is σ = 7821774720. Its totient is φ = 651814464.

The previous prime is 2851688471. The next prime is 2851688509. The reversal of 2851688490 is 948861582.

It is an interprime number because it is at equal distance from previous prime (2851688471) and next prime (2851688509).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6789525 + ... + 6789944.

It is an arithmetic number, because the mean of its divisors is an integer number (244430460).

Almost surely, 2^2851688490 is an apocalyptic number.

2851688490 is an abundant number, since it is smaller than the sum of its proper divisors (4970086230).

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

2851688490 is a wasteful number, since it uses less digits than its factorization.

2851688490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13579486.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The square root of 2851688490 is about 53401.2030763353. The cubic root of 2851688490 is about 1418.0798768433.

The spelling of 2851688490 in words is "two billion, eight hundred fifty-one million, six hundred eighty-eight thousand, four hundred ninety".