181440162 has 20 divisors (see below), whose sum is σ = 406560726. Its totient is φ = 60480000.

The previous prime is 181440157. The next prime is 181440173. The reversal of 181440162 is 261044181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 114511401 + 66928761 = 10701^2 + 8181^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 559839 + ... + 560162.

Almost surely, 2^181440162 is an apocalyptic number.

181440162 is an abundant number, since it is smaller than the sum of its proper divisors (225120564).

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

181440162 is a wasteful number, since it uses less digits than its factorization.

181440162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120015 (or 1120006 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 181440162 is about 13469.9726057628. The cubic root of 181440162 is about 566.1234461270.

The spelling of 181440162 in words is "one hundred eighty-one million, four hundred forty thousand, one hundred sixty-two".