18124421974 has 16 divisors (see below), whose sum is σ = 28762786800. Its totient is φ = 8541669024.

The previous prime is 18124421933. The next prime is 18124421983. The reversal of 18124421974 is 47912442181.

It is a super-2 number, since 2×18124421974² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18124421974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1203069 + ... + 1218040.

It is an arithmetic number, because the mean of its divisors is an integer number (1797674175).

Almost surely, 2^18124421974 is an apocalyptic number.

18124421974 is a deficient number, since it is larger than the sum of its proper divisors (10638364826).

18124421974 is a wasteful number, since it uses less digits than its factorization.

18124421974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421327.

The product of its digits is 129024, while the sum is 43.

The spelling of 18124421974 in words is "eighteen billion, one hundred twenty-four million, four hundred twenty-one thousand, nine hundred seventy-four".