181045995 has 64 divisors (see below), whose sum is σ = 334623744. Its totient is φ = 82874880.

The previous prime is 181045981. The next prime is 181045999. The reversal of 181045995 is 599540181.

It is not a de Polignac number, because 181045995 - 2⁴ = 181045979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (181045999) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 165400 + ... + 166490.

It is an arithmetic number, because the mean of its divisors is an integer number (5228496).

Almost surely, 2^181045995 is an apocalyptic number.

181045995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

181045995 is a deficient number, since it is larger than the sum of its proper divisors (153577749).

181045995 is a wasteful number, since it uses less digits than its factorization.

181045995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 181045995 is about 13455.3333292044. Note that the first 4 decimals coincide. The cubic root of 181045995 is about 565.7131933947.

The spelling of 181045995 in words is "one hundred eighty-one million, forty-five thousand, nine hundred ninety-five".