18158362542 has 32 divisors (see below), whose sum is σ = 41113280160. Its totient is φ = 5938583040.

The previous prime is 18158362517. The next prime is 18158362549. The reversal of 18158362542 is 24526385181.

18158362542 is a `hidden beast` number, since 1 + 8 + 1 + 583 + 6 + 25 + 42 = 666.

It is a super-2 number, since 2×18158362542² (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 (18158362549) 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 15 ways as a sum of consecutive naturals, for example, 3169459 + ... + 3175182.

It is an arithmetic number, because the mean of its divisors is an integer number (1284790005).

Almost surely, 2^18158362542 is an apocalyptic number.

18158362542 is an abundant number, since it is smaller than the sum of its proper divisors (22954917618).

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

18158362542 is a wasteful number, since it uses less digits than its factorization.

18158362542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344705 (or 6344699 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The spelling of 18158362542 in words is "eighteen billion, one hundred fifty-eight million, three hundred sixty-two thousand, five hundred forty-two".