18362988387 has 64 divisors (see below), whose sum is σ = 29248128000. Its totient is φ = 11350969344.

The previous prime is 18362988323. The next prime is 18362988401. The reversal of 18362988387 is 78388926381.

It is not a de Polignac number, because 18362988387 - 2⁶ = 18362988323 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18362988187) 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 63 ways as a sum of consecutive naturals, for example, 19765939 + ... + 19766867.

It is an arithmetic number, because the mean of its divisors is an integer number (457002000).

Almost surely, 2^18362988387 is an apocalyptic number.

18362988387 is a deficient number, since it is larger than the sum of its proper divisors (10885139613).

18362988387 is a wasteful number, since it uses less digits than its factorization.

18362988387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737 (or 1731 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The spelling of 18362988387 in words is "eighteen billion, three hundred sixty-two million, nine hundred eighty-eight thousand, three hundred eighty-seven".