18136846080 has 180 divisors, whose sum is σ = 64897322952. Its totient is φ = 4836464640.

The previous prime is 18136846069. The next prime is 18136846099. The reversal of 18136846080 is 8064863181.

It is a happy number.

18136846080 is a `hidden beast` number, since 1 + 8 + 1 + 36 + 8 + 4 + 608 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a super-2 number, since 2×18136846080² (a number of 21 digits) contains 22 as substring.

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 19 ways as a sum of consecutive naturals, for example, 16215 + ... + 191145.

Almost surely, 2^18136846080 is an apocalyptic number.

18136846080 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 18136846080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32448661476).

18136846080 is an abundant number, since it is smaller than the sum of its proper divisors (46760476872).

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

18136846080 is an equidigital number, since it uses as much as digits as its factorization.

18136846080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174964 (or 174941 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 18136846080 in words is "eighteen billion, one hundred thirty-six million, eight hundred forty-six thousand, eighty".