18973391054 has 8 divisors (see below), whose sum is σ = 28461205488. Its totient is φ = 9486322560.

The previous prime is 18973391029. The next prime is 18973391077. The reversal of 18973391054 is 45019337981.

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

It is a junction number, because it is equal to n+sod(n) for n = 18973390993 and 18973391011.

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, 117842 + ... + 227669.

It is an arithmetic number, because the mean of its divisors is an integer number (3557650686).

Almost surely, 2^18973391054 is an apocalyptic number.

18973391054 is a deficient number, since it is larger than the sum of its proper divisors (9487814434).

18973391054 is a wasteful number, since it uses less digits than its factorization.

18973391054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372970.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 18973391054 in words is "eighteen billion, nine hundred seventy-three million, three hundred ninety-one thousand, fifty-four".