18988898853 has 4 divisors (see below), whose sum is σ = 25318531808. Its totient is φ = 12659265900.

The previous prime is 18988898843. The next prime is 18988898879. The reversal of 18988898853 is 35889888981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18988898853 - 2¹⁴ = 18988882469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18988898843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3164816473 + ... + 3164816478.

It is an arithmetic number, because the mean of its divisors is an integer number (6329632952).

Almost surely, 2^18988898853 is an apocalyptic number.

It is an amenable number.

18988898853 is a deficient number, since it is larger than the sum of its proper divisors (6329632955).

18988898853 is an equidigital number, since it uses as much as digits as its factorization.

18988898853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6329632954.

The product of its digits is 318504960, while the sum is 75.

The spelling of 18988898853 in words is "eighteen billion, nine hundred eighty-eight million, eight hundred ninety-eight thousand, eight hundred fifty-three".