18801968424 has 64 divisors (see below), whose sum is σ = 49097318400. Its totient is φ = 5988878016.

The previous prime is 18801968411. The next prime is 18801968509. The reversal of 18801968424 is 42486910881.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557137 + ... + 589919.

It is an arithmetic number, because the mean of its divisors is an integer number (767145600).

Almost surely, 2^18801968424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18801968424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24548659200).

18801968424 is an abundant number, since it is smaller than the sum of its proper divisors (30295349976).

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

18801968424 is a wasteful number, since it uses less digits than its factorization.

18801968424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33854 (or 33850 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 51.

The spelling of 18801968424 in words is "eighteen billion, eight hundred one million, nine hundred sixty-eight thousand, four hundred twenty-four".