181056936 has 64 divisors (see below), whose sum is σ = 485913600. Its totient is φ = 56014848.

The previous prime is 181056923. The next prime is 181056937. The reversal of 181056936 is 639650181.

181056936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×181056936² = 65563228147416192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 181056894 and 181056903.

It is not an unprimeable number, because it can be changed into a prime (181056937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26745 + ... + 32823.

It is an arithmetic number, because the mean of its divisors is an integer number (7592400).

Almost surely, 2^181056936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181056936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242956800).

181056936 is an abundant number, since it is smaller than the sum of its proper divisors (304856664).

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

181056936 is a wasteful number, since it uses less digits than its factorization.

181056936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6178 (or 6174 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 181056936 is about 13455.7398904705. The cubic root of 181056936 is about 565.7245889213.

The spelling of 181056936 in words is "one hundred eighty-one million, fifty-six thousand, nine hundred thirty-six".