18393913454 has 16 divisors (see below), whose sum is σ = 31762590048. Its totient is φ = 7825564032.

The previous prime is 18393913451. The next prime is 18393913469. The reversal of 18393913454 is 45431939381.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18393913451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4793159 + ... + 4796994.

It is an arithmetic number, because the mean of its divisors is an integer number (1985161878).

Almost surely, 2^18393913454 is an apocalyptic number.

18393913454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18393913454 is a deficient number, since it is larger than the sum of its proper divisors (13368676594).

18393913454 is a wasteful number, since it uses less digits than its factorization.

18393913454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9590299.

The product of its digits is 1399680, while the sum is 50.

The spelling of 18393913454 in words is "eighteen billion, three hundred ninety-three million, nine hundred thirteen thousand, four hundred fifty-four".