18056338740 has 432 divisors, whose sum is σ = 63578511360. Its totient is φ = 4138675200.

The previous prime is 18056338717. The next prime is 18056338823. The reversal of 18056338740 is 4783365081.

18056338740 is a `hidden beast` number, since 1 + 8 + 0 + 5 + 633 + 8 + 7 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 31733176 + ... + 31733744.

It is an arithmetic number, because the mean of its divisors is an integer number (147172480).

Almost surely, 2^18056338740 is an apocalyptic number.

18056338740 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 18056338740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31789255680).

18056338740 is an abundant number, since it is smaller than the sum of its proper divisors (45522172620).

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

18056338740 is a wasteful number, since it uses less digits than its factorization.

18056338740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 18056338740 in words is "eighteen billion, fifty-six million, three hundred thirty-eight thousand, seven hundred forty".