913788491 has 12 divisors (see below), whose sum is σ = 1147900656. Its totient is φ = 712042320.

The previous prime is 913788439. The next prime is 913788517. The reversal of 913788491 is 194887319.

It is not a de Polignac number, because 913788491 - 2¹⁰ = 913787467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (913788431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 538580 + ... + 540273.

It is an arithmetic number, because the mean of its divisors is an integer number (95658388).

Almost surely, 2^913788491 is an apocalyptic number.

913788491 is a deficient number, since it is larger than the sum of its proper divisors (234112165).

913788491 is a wasteful number, since it uses less digits than its factorization.

913788491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078882 (or 1078871 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 913788491 is about 30228.9346653169. The cubic root of 913788491 is about 970.3950249223.

The spelling of 913788491 in words is "nine hundred thirteen million, seven hundred eighty-eight thousand, four hundred ninety-one".