18739114940 has 96 divisors (see below), whose sum is σ = 48742641024. Its totient is φ = 5892756480.

The previous prime is 18739114939. The next prime is 18739114981. The reversal of 18739114940 is 4941193781.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252950 + ... + 318530.

It is an arithmetic number, because the mean of its divisors is an integer number (507735844).

Almost surely, 2^18739114940 is an apocalyptic number.

18739114940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18739114940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24371320512).

18739114940 is an abundant number, since it is smaller than the sum of its proper divisors (30003526084).

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

18739114940 is a wasteful number, since it uses less digits than its factorization.

18739114940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65767 (or 65765 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 18739114940 in words is "eighteen billion, seven hundred thirty-nine million, one hundred fourteen thousand, nine hundred forty".