913491372889 has 8 divisors (see below), whose sum is σ = 916515683712. Its totient is φ = 910472034000.

The previous prime is 913491372881. The next prime is 913491372901. The reversal of 913491372889 is 988273194319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 913491372889 - 2³ = 913491372881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 913491372889.

It is not an unprimeable number, because it can be changed into a prime (913491372881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874737 + ... + 1610014.

It is an arithmetic number, because the mean of its divisors is an integer number (114564460464).

Almost surely, 2^913491372889 is an apocalyptic number.

It is an amenable number.

913491372889 is a deficient number, since it is larger than the sum of its proper divisors (3024310823).

913491372889 is a wasteful number, since it uses less digits than its factorization.

913491372889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485967.

The product of its digits is 23514624, while the sum is 64.

The spelling of 913491372889 in words is "nine hundred thirteen billion, four hundred ninety-one million, three hundred seventy-two thousand, eight hundred eighty-nine".