18552018387 has 16 divisors (see below), whose sum is σ = 28276102400. Its totient is φ = 10598768352.

The previous prime is 18552018379. The next prime is 18552018409. The reversal of 18552018387 is 78381025581.

It is not a de Polignac number, because 18552018387 - 2³ = 18552018379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18552018307) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1573 + ... + 192630.

It is an arithmetic number, because the mean of its divisors is an integer number (1767256400).

Almost surely, 2^18552018387 is an apocalyptic number.

18552018387 is a deficient number, since it is larger than the sum of its proper divisors (9724084013).

18552018387 is a wasteful number, since it uses less digits than its factorization.

18552018387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198762.

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 18552018387 in words is "eighteen billion, five hundred fifty-two million, eighteen thousand, three hundred eighty-seven".