18942567424 has 297 divisors, whose sum is σ = 46220324521. Its totient is φ = 7751434240.

The previous prime is 18942567409. The next prime is 18942567437. The reversal of 18942567424 is 42476524981.

The square root of 18942567424 is 137632.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14747673600 + 4194893824 = 121440^2 + 64768^2 .

It is a super-2 number, since 2×18942567424² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 823589877 + ... + 823589899.

Almost surely, 2^18942567424 is an apocalyptic number.

18942567424 is the 137632-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18942567424

18942567424 is an abundant number, since it is smaller than the sum of its proper divisors (27277757097).

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

18942567424 is a wasteful number, since it uses less digits than its factorization.

18942567424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 53 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The spelling of 18942567424 in words is "eighteen billion, nine hundred forty-two million, five hundred sixty-seven thousand, four hundred twenty-four".