91930068974 has 8 divisors (see below), whose sum is σ = 137896465080. Its totient is φ = 45964580616.

The previous prime is 91930068941. The next prime is 91930069001. The reversal of 91930068974 is 47986003919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×91930068974² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154412 + ... + 455744.

It is an arithmetic number, because the mean of its divisors is an integer number (17237058135).

Almost surely, 2^91930068974 is an apocalyptic number.

91930068974 is a deficient number, since it is larger than the sum of its proper divisors (45966396106).

91930068974 is a wasteful number, since it uses less digits than its factorization.

91930068974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453874.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 91930068974 in words is "ninety-one billion, nine hundred thirty million, sixty-eight thousand, nine hundred seventy-four".