18955735137 has 24 divisors (see below), whose sum is σ = 28271979008. Its totient is φ = 12225945600.

The previous prime is 18955735109. The next prime is 18955735147. The reversal of 18955735137 is 73153755981.

It is a happy number.

18955735137 is a `hidden beast` number, since 1 + 8 + 9 + 55 + 73 + 513 + 7 = 666.

It is not a de Polignac number, because 18955735137 - 2⁷ = 18955735009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18955735147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1226337 + ... + 1241697.

Almost surely, 2^18955735137 is an apocalyptic number.

It is an amenable number.

18955735137 is a deficient number, since it is larger than the sum of its proper divisors (9316243871).

18955735137 is a wasteful number, since it uses less digits than its factorization.

18955735137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19821 (or 19818 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 54.

The spelling of 18955735137 in words is "eighteen billion, nine hundred fifty-five million, seven hundred thirty-five thousand, one hundred thirty-seven".