91150002 has 16 divisors (see below), whose sum is σ = 202555680. Its totient is φ = 30383316.

The previous prime is 91150001. The next prime is 91150069. The reversal of 91150002 is 20005119.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (91150001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843928 + ... + 844035.

It is an arithmetic number, because the mean of its divisors is an integer number (12659730).

Almost surely, 2^91150002 is an apocalyptic number.

91150002 is an abundant number, since it is smaller than the sum of its proper divisors (111405678).

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

91150002 is a wasteful number, since it uses less digits than its factorization.

91150002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687974 (or 1687968 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 91150002 is about 9547.2510179632. The cubic root of 91150002 is about 450.0411517922.

The spelling of 91150002 in words is "ninety-one million, one hundred fifty thousand, two".