18196938153 has 12 divisors (see below), whose sum is σ = 27667859440. Its totient is φ = 11492802936.

The previous prime is 18196938139. The next prime is 18196938157. The reversal of 18196938153 is 35183969181.

It is not a de Polignac number, because 18196938153 - 2⁸ = 18196937897 is a prime.

It is a super-2 number, since 2×18196938153² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18196938153.

It is not an unprimeable number, because it can be changed into a prime (18196938157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53207251 + ... + 53207592.

Almost surely, 2^18196938153 is an apocalyptic number.

It is an amenable number.

18196938153 is a deficient number, since it is larger than the sum of its proper divisors (9470921287).

18196938153 is a wasteful number, since it uses less digits than its factorization.

18196938153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106414868 (or 106414865 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The spelling of 18196938153 in words is "eighteen billion, one hundred ninety-six million, nine hundred thirty-eight thousand, one hundred fifty-three".