18365181942 has 16 divisors (see below), whose sum is σ = 37055412720. Its totient is φ = 6067552512.

The previous prime is 18365181941. The next prime is 18365181943. The reversal of 18365181942 is 24918156381.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18365181941) and next prime (18365181943).

It is a junction number, because it is equal to n+sod(n) for n = 18365181891 and 18365181900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18365181941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13542967 + ... + 13544322.

It is an arithmetic number, because the mean of its divisors is an integer number (2315963295).

Almost surely, 2^18365181942 is an apocalyptic number.

18365181942 is an abundant number, since it is smaller than the sum of its proper divisors (18690230778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18365181942 is a wasteful number, since it uses less digits than its factorization.

18365181942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27087407.

The product of its digits is 414720, while the sum is 48.

The spelling of 18365181942 in words is "eighteen billion, three hundred sixty-five million, one hundred eighty-one thousand, nine hundred forty-two".