181053864 has 48 divisors (see below), whose sum is σ = 492011520. Its totient is φ = 60147360.

The previous prime is 181053853. The next prime is 181053877. The reversal of 181053864 is 468350181.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18009 + ... + 26199.

It is an arithmetic number, because the mean of its divisors is an integer number (10250240).

Almost surely, 2^181053864 is an apocalyptic number.

It is an amenable number.

181053864 is an abundant number, since it is smaller than the sum of its proper divisors (310957656).

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

181053864 is a wasteful number, since it uses less digits than its factorization.

181053864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8510 (or 8503 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 181053864 is about 13455.6257379581. The cubic root of 181053864 is about 565.7213893463.

The spelling of 181053864 in words is "one hundred eighty-one million, fifty-three thousand, eight hundred sixty-four".