2261879992 has 16 divisors (see below), whose sum is σ = 4243698000. Its totient is φ = 1130227200.

The previous prime is 2261879953. The next prime is 2261880043. The reversal of 2261879992 is 2999781622.

It is a super-2 number, since 2×2261879992² = 10232202196419840128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75492 + ... + 101107.

It is an arithmetic number, because the mean of its divisors is an integer number (265231125).

Almost surely, 2^2261879992 is an apocalyptic number.

It is an amenable number.

2261879992 is a deficient number, since it is larger than the sum of its proper divisors (1981818008).

2261879992 is a wasteful number, since it uses less digits than its factorization.

2261879992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178206 (or 178202 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 55.

The square root of 2261879992 is about 47559.2261501383. The cubic root of 2261879992 is about 1312.6729008442.

The spelling of 2261879992 in words is "two billion, two hundred sixty-one million, eight hundred seventy-nine thousand, nine hundred ninety-two".