19791948 has 24 divisors (see below), whose sum is σ = 50379840. Its totient is φ = 5997520.

The previous prime is 19791923. The next prime is 19791953. The reversal of 19791948 is 84919791.

It is a junction number, because it is equal to n+sod(n) for n = 19791897 and 19791906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74838 + ... + 75101.

It is an arithmetic number, because the mean of its divisors is an integer number (2099160).

Almost surely, 2^19791948 is an apocalyptic number.

It is an amenable number.

19791948 is an abundant number, since it is smaller than the sum of its proper divisors (30587892).

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

19791948 is a wasteful number, since it uses less digits than its factorization.

19791948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149957 (or 149955 counting only the distinct ones).

The product of its digits is 163296, while the sum is 48.

The square root of 19791948 is about 4448.8142240377. The cubic root of 19791948 is about 270.4972455510.

The spelling of 19791948 in words is "nineteen million, seven hundred ninety-one thousand, nine hundred forty-eight".