91401318 has 32 divisors (see below), whose sum is σ = 204426720. Its totient is φ = 30270240.

The previous prime is 91401313. The next prime is 91401319. The reversal of 91401318 is 81310419.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91401291 and 91401300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91401313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3088 + ... + 13868.

It is an arithmetic number, because the mean of its divisors is an integer number (6388335).

Almost surely, 2^91401318 is an apocalyptic number.

91401318 is an abundant number, since it is smaller than the sum of its proper divisors (113025402).

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

91401318 is a wasteful number, since it uses less digits than its factorization.

91401318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10949 (or 10943 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 91401318 is about 9560.4036525661. The cubic root of 91401318 is about 450.4543854763.

It can be divided in two parts, 91401 and 318, that added together give a palindrome (91719).

The spelling of 91401318 in words is "ninety-one million, four hundred one thousand, three hundred eighteen".