18973200215 has 16 divisors (see below), whose sum is σ = 24613885920. Its totient is φ = 13991045760.

The previous prime is 18973200203. The next prime is 18973200223. The reversal of 18973200215 is 51200237981.

It is not a de Polignac number, because 18973200215 - 2⁶ = 18973200151 is a prime.

It is a congruent number.

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, 2695376 + ... + 2702405.

It is an arithmetic number, because the mean of its divisors is an integer number (1538367870).

Almost surely, 2^18973200215 is an apocalyptic number.

18973200215 is a deficient number, since it is larger than the sum of its proper divisors (5640685705).

18973200215 is a wasteful number, since it uses less digits than its factorization.

18973200215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397842.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 18973200215 in words is "eighteen billion, nine hundred seventy-three million, two hundred thousand, two hundred fifteen".