91081962 has 16 divisors (see below), whose sum is σ = 202404480. Its totient is φ = 30360636.

The previous prime is 91081943. The next prime is 91081981. The reversal of 91081962 is 26918019.

It is an interprime number because it is at equal distance from previous prime (91081943) and next prime (91081981).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843298 + ... + 843405.

It is an arithmetic number, because the mean of its divisors is an integer number (12650280).

Almost surely, 2^91081962 is an apocalyptic number.

91081962 is an abundant number, since it is smaller than the sum of its proper divisors (111322518).

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

91081962 is a wasteful number, since it uses less digits than its factorization.

91081962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686714 (or 1686708 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 91081962 is about 9543.6870233679. The cubic root of 91081962 is about 449.9291443994.

The spelling of 91081962 in words is "ninety-one million, eighty-one thousand, nine hundred sixty-two".