18810035136 has 336 divisors, whose sum is σ = 58187738336. Its totient is φ = 6019743744.

The previous prime is 18810035113. The next prime is 18810035143. The reversal of 18810035136 is 63153001881.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18810035136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55815960 + ... + 55816296.

Almost surely, 2^18810035136 is an apocalyptic number.

18810035136 is a gapful number since it is divisible by the number (16) 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 18810035136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29093869168).

18810035136 is an abundant number, since it is smaller than the sum of its proper divisors (39377703200).

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

18810035136 is an equidigital number, since it uses as much as digits as its factorization.

18810035136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 18810035136 in words is "eighteen billion, eight hundred ten million, thirty-five thousand, one hundred thirty-six".