18387098836 has 24 divisors (see below), whose sum is σ = 33876106880. Its totient is φ = 8708357952.

The previous prime is 18387098827. The next prime is 18387098861. The reversal of 18387098836 is 63889078381.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 641320 + ... + 669376.

Almost surely, 2^18387098836 is an apocalyptic number.

It is an amenable number.

18387098836 is a deficient number, since it is larger than the sum of its proper divisors (15489008044).

18387098836 is a wasteful number, since it uses less digits than its factorization.

18387098836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36703 (or 36701 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 18387098836 in words is "eighteen billion, three hundred eighty-seven million, ninety-eight thousand, eight hundred thirty-six".