18742957911 has 36 divisors (see below), whose sum is σ = 28610786568. Its totient is φ = 11822031648.

The previous prime is 18742957903. The next prime is 18742957913. The reversal of 18742957911 is 11975924781.

18742957911 is a `hidden beast` number, since 1 + 87 + 429 + 57 + 91 + 1 = 666.

It is not a de Polignac number, because 18742957911 - 2³ = 18742957903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18742957913) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2768016 + ... + 2774778.

Almost surely, 2^18742957911 is an apocalyptic number.

18742957911 is a deficient number, since it is larger than the sum of its proper divisors (9867828657).

18742957911 is a wasteful number, since it uses less digits than its factorization.

18742957911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660 (or 7638 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 54.

The spelling of 18742957911 in words is "eighteen billion, seven hundred forty-two million, nine hundred fifty-seven thousand, nine hundred eleven".