18801219964 has 12 divisors (see below), whose sum is σ = 32925009600. Its totient is φ = 9394074368.

The previous prime is 18801219937. The next prime is 18801219973. The reversal of 18801219964 is 46991210881.

It is a super-2 number, since 2×18801219964² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627429 + ... + 1638940.

It is an arithmetic number, because the mean of its divisors is an integer number (2743750800).

Almost surely, 2^18801219964 is an apocalyptic number.

It is an amenable number.

18801219964 is a deficient number, since it is larger than the sum of its proper divisors (14123789636).

18801219964 is a wasteful number, since it uses less digits than its factorization.

18801219964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267812 (or 3267810 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 49.

The spelling of 18801219964 in words is "eighteen billion, eight hundred one million, two hundred nineteen thousand, nine hundred sixty-four".