2191158912 has 64 divisors (see below), whose sum is σ = 5955665760. Its totient is φ = 713395200.

The previous prime is 2191158901. The next prime is 2191158923. The reversal of 2191158912 is 2198511912.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2191158901) and next prime (2191158923).

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49839 + ... + 82862.

Almost surely, 2^2191158912 is an apocalyptic number.

It is an amenable number.

2191158912 is an abundant number, since it is smaller than the sum of its proper divisors (3764506848).

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

2191158912 is a wasteful number, since it uses less digits than its factorization.

2191158912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132761 (or 132749 counting only the distinct ones).

The product of its digits is 12960, while the sum is 39.

The square root of 2191158912 is about 46809.8164063907. The cubic root of 2191158912 is about 1298.8468891205.

The spelling of 2191158912 in words is "two billion, one hundred ninety-one million, one hundred fifty-eight thousand, nine hundred twelve".