18964896 has 24 divisors (see below), whose sum is σ = 49783104. Its totient is φ = 6321600.

The previous prime is 18964879. The next prime is 18964931. The reversal of 18964896 is 69846981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98680 + ... + 98871.

It is an arithmetic number, because the mean of its divisors is an integer number (2074296).

Almost surely, 2^18964896 is an apocalyptic number.

18964896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18964896 is an abundant number, since it is smaller than the sum of its proper divisors (30818208).

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

18964896 is a wasteful number, since it uses less digits than its factorization.

18964896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197564 (or 197556 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 18964896 is about 4354.8703769458. The cubic root of 18964896 is about 266.6757274699.

The spelling of 18964896 in words is "eighteen million, nine hundred sixty-four thousand, eight hundred ninety-six".