18114774140 has 24 divisors (see below), whose sum is σ = 38044425552. Its totient is φ = 7245262080.

The previous prime is 18114774127. The next prime is 18114774149. The reversal of 18114774140 is 4147741181.

It is a junction number, because it is equal to n+sod(n) for n = 18114774094 and 18114774103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18114774149) 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, 234452 + ... + 301988.

It is an arithmetic number, because the mean of its divisors is an integer number (1585184398).

Almost surely, 2^18114774140 is an apocalyptic number.

18114774140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18114774140 is an abundant number, since it is smaller than the sum of its proper divisors (19929651412).

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

18114774140 is a wasteful number, since it uses less digits than its factorization.

18114774140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80957 (or 80955 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The spelling of 18114774140 in words is "eighteen billion, one hundred fourteen million, seven hundred seventy-four thousand, one hundred forty".