181290153 has 16 divisors (see below), whose sum is σ = 277574400. Its totient is φ = 104089680.

The previous prime is 181290149. The next prime is 181290167. The reversal of 181290153 is 351092181.

It is not a de Polignac number, because 181290153 - 2² = 181290149 is a prime.

It is a super-2 number, since 2×181290153² = 65732239149526818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 181290153.

It is not an unprimeable number, because it can be changed into a prime (181290103) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 143943 + ... + 145196.

It is an arithmetic number, because the mean of its divisors is an integer number (17348400).

Almost surely, 2^181290153 is an apocalyptic number.

It is an amenable number.

181290153 is a deficient number, since it is larger than the sum of its proper divisors (96284247).

181290153 is a wasteful number, since it uses less digits than its factorization.

181290153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289172.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 181290153 is about 13464.4031802379. The cubic root of 181290153 is about 565.9673854440.

The spelling of 181290153 in words is "one hundred eighty-one million, two hundred ninety thousand, one hundred fifty-three".