18147408384 has 160 divisors (see below), whose sum is σ = 56429531136. Its totient is φ = 5074513920.

The previous prime is 18147408373. The next prime is 18147408403. The reversal of 18147408384 is 48380474181.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 487389 + ... + 523299.

Almost surely, 2^18147408384 is an apocalyptic number.

18147408384 is a gapful number since it is divisible by the number (14) 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 18147408384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28214765568).

18147408384 is an abundant number, since it is smaller than the sum of its proper divisors (38282122752).

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

18147408384 is an equidigital number, since it uses as much as digits as its factorization.

18147408384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35986 (or 35970 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 18147408384 in words is "eighteen billion, one hundred forty-seven million, four hundred eight thousand, three hundred eighty-four".