18743061087 has 6 divisors (see below), whose sum is σ = 27073310472. Its totient is φ = 12495374052.

The previous prime is 18743061041. The next prime is 18743061097. The reversal of 18743061087 is 78016034781.

18743061087 is a `hidden beast` number, since 1 + 87 + 430 + 61 + 0 + 87 = 666.

It is not a de Polignac number, because 18743061087 - 2²⁶ = 18675952223 is a prime.

It is a super-2 number, since 2×18743061087² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18743061097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1041281163 + ... + 1041281180.

It is an arithmetic number, because the mean of its divisors is an integer number (4512218412).

Almost surely, 2^18743061087 is an apocalyptic number.

18743061087 is a deficient number, since it is larger than the sum of its proper divisors (8330249385).

18743061087 is a wasteful number, since it uses less digits than its factorization.

18743061087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082562349 (or 2082562346 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 18743061087 in words is "eighteen billion, seven hundred forty-three million, sixty-one thousand, eighty-seven".