91516468 has 12 divisors (see below), whose sum is σ = 160223140. Its totient is φ = 45738432.

The previous prime is 91516463. The next prime is 91516487. The reversal of 91516468 is 86461519.

It can be written as a sum of positive squares in 2 ways, for example, as 22924944 + 68591524 = 4788^2 + 8282^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 91516468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91516463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11578 + ... + 17806.

Almost surely, 2^91516468 is an apocalyptic number.

It is an amenable number.

91516468 is a deficient number, since it is larger than the sum of its proper divisors (68706672).

91516468 is a wasteful number, since it uses less digits than its factorization.

91516468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9906 (or 9904 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 91516468 is about 9566.4239922763. The cubic root of 91516468 is about 450.6434712083.

The spelling of 91516468 in words is "ninety-one million, five hundred sixteen thousand, four hundred sixty-eight".