18843394974 has 8 divisors (see below), whose sum is σ = 37686789960. Its totient is φ = 6281131656.

The previous prime is 18843394961. The next prime is 18843394993. The reversal of 18843394974 is 47949334881.

It is a sphenic number, since it is the product of 3 distinct primes.

18843394974 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1570282909 + ... + 1570282920.

It is an arithmetic number, because the mean of its divisors is an integer number (4710848745).

Almost surely, 2^18843394974 is an apocalyptic number.

18843394974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18843394974 is a wasteful number, since it uses less digits than its factorization.

18843394974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140565834.

The product of its digits is 20901888, while the sum is 60.

The spelling of 18843394974 in words is "eighteen billion, eight hundred forty-three million, three hundred ninety-four thousand, nine hundred seventy-four".