18886748051999 has 4 divisors (see below), whose sum is σ = 18886928409960. Its totient is φ = 18886567694040.

The previous prime is 18886748051989. The next prime is 18886748052023. The reversal of 18886748051999 is 99915084768881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18886748051999 - 2²⁴ = 18886731274783 is a prime.

It is a super-3 number, since 3×18886748051999³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18886748051939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90021812 + ... + 90231369.

It is an arithmetic number, because the mean of its divisors is an integer number (4721732102490).

Almost surely, 2^{18886748051999} is an apocalyptic number.

18886748051999 is a deficient number, since it is larger than the sum of its proper divisors (180357961).

18886748051999 is a wasteful number, since it uses less digits than its factorization.

18886748051999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180357960.

The product of its (nonzero) digits is 2508226560, while the sum is 83.

The spelling of 18886748051999 in words is "eighteen trillion, eight hundred eighty-six billion, seven hundred forty-eight million, fifty-one thousand, nine hundred ninety-nine".