18097736500 has 24 divisors (see below), whose sum is σ = 39525457608. Its totient is φ = 7239094400.

The previous prime is 18097736483. The next prime is 18097736509. The reversal of 18097736500 is 563779081.

It can be written as a sum of positive squares in 4 ways, for example, as 6948496 + 18090788004 = 2636^2 + 134502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18097736509) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18097237 + ... + 18098236.

It is an arithmetic number, because the mean of its divisors is an integer number (1646894067).

Almost surely, 2^18097736500 is an apocalyptic number.

18097736500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18097736500 is an abundant number, since it is smaller than the sum of its proper divisors (21427721108).

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

18097736500 is a wasteful number, since it uses less digits than its factorization.

18097736500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36195492 (or 36195480 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 18097736500 in words is "eighteen billion, ninety-seven million, seven hundred thirty-six thousand, five hundred".