91745413 has 32 divisors (see below), whose sum is σ = 106686720. Its totient is φ = 78397440.

The previous prime is 91745411. The next prime is 91745417. The reversal of 91745413 is 31454719.

It is a cyclic number.

It is not a de Polignac number, because 91745413 - 2¹ = 91745411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91745411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 945781 + ... + 945877.

It is an arithmetic number, because the mean of its divisors is an integer number (3333960).

Almost surely, 2^91745413 is an apocalyptic number.

It is an amenable number.

91745413 is a deficient number, since it is larger than the sum of its proper divisors (14941307).

91745413 is a wasteful number, since it uses less digits than its factorization.

91745413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237.

The product of its digits is 15120, while the sum is 34.

The square root of 91745413 is about 9578.3825878903. The cubic root of 91745413 is about 451.0189469968.

The spelling of 91745413 in words is "ninety-one million, seven hundred forty-five thousand, four hundred thirteen".