18210739896 has 64 divisors (see below), whose sum is σ = 51340435200. Its totient is φ = 5979641184.

The previous prime is 18210739879. The next prime is 18210739903. The reversal of 18210739896 is 69893701281.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614700 + ... + 643643.

It is an arithmetic number, because the mean of its divisors is an integer number (802194300).

Almost surely, 2^18210739896 is an apocalyptic number.

It is an amenable number.

18210739896 is an abundant number, since it is smaller than the sum of its proper divisors (33129695304).

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

18210739896 is a wasteful number, since it uses less digits than its factorization.

18210739896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258425 (or 1258415 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 18210739896 in words is "eighteen billion, two hundred ten million, seven hundred thirty-nine thousand, eight hundred ninety-six".