911891912 has 8 divisors (see below), whose sum is σ = 1709797350. Its totient is φ = 455945952.

The previous prime is 911891831. The next prime is 911891941. The reversal of 911891912 is 219198119.

It can be written as a sum of positive squares in only one way, i.e., 618317956 + 293573956 = 24866^2 + 17134^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 911891912.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56993237 + ... + 56993252.

Almost surely, 2^911891912 is an apocalyptic number.

It is an amenable number.

911891912 is a deficient number, since it is larger than the sum of its proper divisors (797905438).

911891912 is a wasteful number, since it uses less digits than its factorization.

911891912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113986495 (or 113986491 counting only the distinct ones).

The product of its digits is 11664, while the sum is 41.

The square root of 911891912 is about 30197.5481123882. The cubic root of 911891912 is about 969.7232044033.

The spelling of 911891912 in words is "nine hundred eleven million, eight hundred ninety-one thousand, nine hundred twelve".