913881388 has 12 divisors (see below), whose sum is σ = 1827762832. Its totient is φ = 391663440.

The previous prime is 913881373. The next prime is 913881391. The reversal of 913881388 is 883188319.

913881388 is an admirable 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, 16319283 + ... + 16319338.

Almost surely, 2^913881388 is an apocalyptic number.

It is an amenable number.

913881388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

913881388 is a wasteful number, since it uses less digits than its factorization.

913881388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32638632 (or 32638630 counting only the distinct ones).

The product of its digits is 331776, while the sum is 49.

The square root of 913881388 is about 30230.4711838899. The cubic root of 913881388 is about 970.4279077075.

The spelling of 913881388 in words is "nine hundred thirteen million, eight hundred eighty-one thousand, three hundred eighty-eight".