91394381530 has 32 divisors (see below), whose sum is σ = 174915832320. Its totient is φ = 34263317760.

The previous prime is 91394381527. The next prime is 91394381569. The reversal of 91394381530 is 3518349319.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084086 + ... + 1165345.

It is an arithmetic number, because the mean of its divisors is an integer number (5466119760).

Almost surely, 2^91394381530 is an apocalyptic number.

91394381530 is a deficient number, since it is larger than the sum of its proper divisors (83521450790).

91394381530 is a wasteful number, since it uses less digits than its factorization.

91394381530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249694.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 91394381530 in words is "ninety-one billion, three hundred ninety-four million, three hundred eighty-one thousand, five hundred thirty".