18618797414 has 32 divisors (see below), whose sum is σ = 33768472320. Its totient is φ = 7521117408.

The previous prime is 18618797401. The next prime is 18618797441. The reversal of 18618797414 is 41479781681.

It is a self number, because there is not a number n which added to its sum of digits gives 18618797414.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125252 + ... + 230055.

It is an arithmetic number, because the mean of its divisors is an integer number (1055264760).

Almost surely, 2^18618797414 is an apocalyptic number.

18618797414 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18618797414 is a deficient number, since it is larger than the sum of its proper divisors (15149674906).

18618797414 is a wasteful number, since it uses less digits than its factorization.

18618797414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355532.

The product of its digits is 2709504, while the sum is 56.

The spelling of 18618797414 in words is "eighteen billion, six hundred eighteen million, seven hundred ninety-seven thousand, four hundred fourteen".