91830440048 has 40 divisors (see below), whose sum is σ = 178497050160. Its totient is φ = 45766932480.

The previous prime is 91830440041. The next prime is 91830440059. The reversal of 91830440048 is 84004403819.

It is a junction number, because it is equal to n+sod(n) for n = 91830439987 and 91830440014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91830440041) 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, 6470336 + ... + 6484512.

It is an arithmetic number, because the mean of its divisors is an integer number (4462426254).

Almost surely, 2^91830440048 is an apocalyptic number.

It is an amenable number.

91830440048 is a deficient number, since it is larger than the sum of its proper divisors (86666610112).

91830440048 is a wasteful number, since it uses less digits than its factorization.

91830440048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15465 (or 15459 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 91830440048 in words is "ninety-one billion, eight hundred thirty million, four hundred forty thousand, forty-eight".