91928451832 has 32 divisors (see below), whose sum is σ = 197008358400. Its totient is φ = 39394144224.

The previous prime is 91928451809. The next prime is 91928451833. The reversal of 91928451832 is 23815482919.

It is a self number, because there is not a number n which added to its sum of digits gives 91928451832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91928451833) 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, 558853 + ... + 704395.

It is an arithmetic number, because the mean of its divisors is an integer number (6156511200).

Almost surely, 2^91928451832 is an apocalyptic number.

It is an amenable number.

91928451832 is an abundant number, since it is smaller than the sum of its proper divisors (105079906568).

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

91928451832 is a wasteful number, since it uses less digits than its factorization.

91928451832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156835 (or 156831 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The spelling of 91928451832 in words is "ninety-one billion, nine hundred twenty-eight million, four hundred fifty-one thousand, eight hundred thirty-two".