18464970943 has 4 divisors (see below), whose sum is σ = 18465816208. Its totient is φ = 18464125680.

The previous prime is 18464970893. The next prime is 18464970959. The reversal of 18464970943 is 34907946481.

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 18464970943 - 2¹³ = 18464962751 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 (18464979943) 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 3 ways as a sum of consecutive naturals, for example, 388971 + ... + 433852.

It is an arithmetic number, because the mean of its divisors is an integer number (4616454052).

Almost surely, 2^18464970943 is an apocalyptic number.

18464970943 is a deficient number, since it is larger than the sum of its proper divisors (845265).

18464970943 is an equidigital number, since it uses as much as digits as its factorization.

18464970943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845264.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 18464970943 in words is "eighteen billion, four hundred sixty-four million, nine hundred seventy thousand, nine hundred forty-three".