18183078774 has 160 divisors (see below), whose sum is σ = 49942759680. Its totient is φ = 4828569408.

The previous prime is 18183078761. The next prime is 18183078779. The reversal of 18183078774 is 47787038181.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 18183078774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18183078779) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1133977 + ... + 1149899.

It is an arithmetic number, because the mean of its divisors is an integer number (312142248).

Almost surely, 2^18183078774 is an apocalyptic number.

18183078774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18183078774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24971379840).

18183078774 is an abundant number, since it is smaller than the sum of its proper divisors (31759680906).

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

18183078774 is a wasteful number, since it uses less digits than its factorization.

18183078774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16016 (or 16007 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 54.

The spelling of 18183078774 in words is "eighteen billion, one hundred eighty-three million, seventy-eight thousand, seven hundred seventy-four".