91180379 has 12 divisors (see below), whose sum is σ = 95113200. Its totient is φ = 87403680.

The previous prime is 91180337. The next prime is 91180381. The reversal of 91180379 is 97308119.

It is not a de Polignac number, because 91180379 - 2¹⁶ = 91114843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91180079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151922 + ... + 152520.

It is an arithmetic number, because the mean of its divisors is an integer number (7926100).

Almost surely, 2^91180379 is an apocalyptic number.

91180379 is a deficient number, since it is larger than the sum of its proper divisors (3932821).

91180379 is a wasteful number, since it uses less digits than its factorization.

91180379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 91180379 is about 9548.8417622244. The cubic root of 91180379 is about 450.0911403874.

The spelling of 91180379 in words is "ninety-one million, one hundred eighty thousand, three hundred seventy-nine".