91151442 has 24 divisors (see below), whose sum is σ = 198104400. Its totient is φ = 30290040.

The previous prime is 91151429. The next prime is 91151447. The reversal of 91151442 is 24415119.

It is not an unprimeable number, because it can be changed into a prime (91151447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1692 + ... + 13607.

It is an arithmetic number, because the mean of its divisors is an integer number (8254350).

Almost surely, 2^91151442 is an apocalyptic number.

91151442 is an abundant number, since it is smaller than the sum of its proper divisors (106952958).

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

91151442 is a wasteful number, since it uses less digits than its factorization.

91151442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15638 (or 15635 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 91151442 is about 9547.3264320437. The cubic root of 91151442 is about 450.0435217166.

The spelling of 91151442 in words is "ninety-one million, one hundred fifty-one thousand, four hundred forty-two".