18618574743 has 24 divisors (see below), whose sum is σ = 28515240000. Its totient is φ = 11665926144.

The previous prime is 18618574699. The next prime is 18618574763. The reversal of 18618574743 is 34747581681.

18618574743 is a `hidden beast` number, since 1 + 8 + 61 + 8 + 574 + 7 + 4 + 3 = 666.

It is not a de Polignac number, because 18618574743 - 2¹⁰ = 18618573719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18618574743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18618574763) 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, 25383 + ... + 194631.

It is an arithmetic number, because the mean of its divisors is an integer number (1188135000).

Almost surely, 2^18618574743 is an apocalyptic number.

18618574743 is a deficient number, since it is larger than the sum of its proper divisors (9896665257).

18618574743 is a wasteful number, since it uses less digits than its factorization.

18618574743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169991 (or 169988 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 18618574743 in words is "eighteen billion, six hundred eighteen million, five hundred seventy-four thousand, seven hundred forty-three".