19401533124 has 24 divisors (see below), whose sum is σ = 45283976640. Its totient is φ = 6465215904.

The previous prime is 19401533093. The next prime is 19401533131. The reversal of 19401533124 is 42133510491.

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, 203739 + ... + 283394.

It is an arithmetic number, because the mean of its divisors is an integer number (1886832360).

Almost surely, 2^19401533124 is an apocalyptic number.

It is an amenable number.

19401533124 is an abundant number, since it is smaller than the sum of its proper divisors (25882443516).

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

19401533124 is a wasteful number, since it uses less digits than its factorization.

19401533124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490459 (or 490457 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 19401533124 in words is "nineteen billion, four hundred one million, five hundred thirty-three thousand, one hundred twenty-four".