2991338850 has 24 divisors (see below), whose sum is σ = 7418520720. Its totient is φ = 797690320.

The previous prime is 2991338849. The next prime is 2991338851. The reversal of 2991338850 is 588331992.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2991338849) and next prime (2991338851).

It is a self number, because there is not a number n which added to its sum of digits gives 2991338850.

It is not an unprimeable number, because it can be changed into a prime (2991338851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9970980 + ... + 9971279.

It is an arithmetic number, because the mean of its divisors is an integer number (309105030).

Almost surely, 2^2991338850 is an apocalyptic number.

2991338850 is an abundant number, since it is smaller than the sum of its proper divisors (4427181870).

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

2991338850 is a wasteful number, since it uses less digits than its factorization.

2991338850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19942274 (or 19942269 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 2991338850 is about 54693.1334812698. The cubic root of 2991338850 is about 1440.8602835944.

The spelling of 2991338850 in words is "two billion, nine hundred ninety-one million, three hundred thirty-eight thousand, eight hundred fifty".