91816416 has 60 divisors (see below), whose sum is σ = 270037152. Its totient is φ = 30604608.

The previous prime is 91816393. The next prime is 91816423. The reversal of 91816416 is 61461819.

It is a happy number.

91816416 is a `hidden beast` number, since 9 + 1 + 8 + 1 + 641 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15120 + ... + 20303.

Almost surely, 2^91816416 is an apocalyptic number.

91816416 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91816416 is an abundant number, since it is smaller than the sum of its proper divisors (178220736).

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

91816416 is a wasteful number, since it uses less digits than its factorization.

91816416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35445 (or 35428 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 91816416 is about 9582.0882901380. The cubic root of 91816416 is about 451.1352668563.

The spelling of 91816416 in words is "ninety-one million, eight hundred sixteen thousand, four hundred sixteen".