18158447160 has 384 divisors, whose sum is σ = 72208281600. Its totient is φ = 4016148480.

The previous prime is 18158447147. The next prime is 18158447207. The reversal of 18158447160 is 6174485181.

18158447160 is a `hidden beast` number, since 1 + 8 + 1 + 584 + 4 + 7 + 1 + 60 = 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2104936 + ... + 2113544.

It is an arithmetic number, because the mean of its divisors is an integer number (188042400).

Almost surely, 2^18158447160 is an apocalyptic number.

18158447160 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 18158447160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36104140800).

18158447160 is an abundant number, since it is smaller than the sum of its proper divisors (54049834440).

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

18158447160 is a wasteful number, since it uses less digits than its factorization.

18158447160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8673 (or 8657 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 18158447160 in words is "eighteen billion, one hundred fifty-eight million, four hundred forty-seven thousand, one hundred sixty".