18792989143 has 4 divisors (see below), whose sum is σ = 18816162568. Its totient is φ = 18769815720.

The previous prime is 18792989141. The next prime is 18792989147. The reversal of 18792989143 is 34198929781.

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 18792989143 - 2¹ = 18792989141 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 (18792989141) 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, 11585496 + ... + 11587117.

It is an arithmetic number, because the mean of its divisors is an integer number (4704040642).

Almost surely, 2^18792989143 is an apocalyptic number.

18792989143 is a deficient number, since it is larger than the sum of its proper divisors (23173425).

18792989143 is an equidigital number, since it uses as much as digits as its factorization.

18792989143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23173424.

The product of its digits is 7838208, while the sum is 61.

The spelling of 18792989143 in words is "eighteen billion, seven hundred ninety-two million, nine hundred eighty-nine thousand, one hundred forty-three".