91402731948 has 48 divisors (see below), whose sum is σ = 232716363264. Its totient is φ = 27691266240.

The previous prime is 91402731941. The next prime is 91402731961. The reversal of 91402731948 is 84913720419.

It is a junction number, because it is equal to n+sod(n) for n = 91402731897 and 91402731906.

It is not an unprimeable number, because it can be changed into a prime (91402731941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495661 + ... + 654587.

It is an arithmetic number, because the mean of its divisors is an integer number (4848257568).

Almost surely, 2^91402731948 is an apocalyptic number.

It is an amenable number.

91402731948 is an abundant number, since it is smaller than the sum of its proper divisors (141313631316).

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

91402731948 is a wasteful number, since it uses less digits than its factorization.

91402731948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163302 (or 163300 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 91402731948 in words is "ninety-one billion, four hundred two million, seven hundred thirty-one thousand, nine hundred forty-eight".