181061802 has 12 divisors (see below), whose sum is σ = 392300610. Its totient is φ = 60353928.

The previous prime is 181061801. The next prime is 181061809. The reversal of 181061802 is 208160181.

It can be written as a sum of positive squares in only one way, i.e., 176863401 + 4198401 = 13299^2 + 2049^2 .

It is a super-2 number, since 2×181061802² = 65566752286974408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (181061801) 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 5 ways as a sum of consecutive naturals, for example, 5029477 + ... + 5029512.

Almost surely, 2^181061802 is an apocalyptic number.

181061802 is an abundant number, since it is smaller than the sum of its proper divisors (211238808).

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

181061802 is a wasteful number, since it uses less digits than its factorization.

181061802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10058997 (or 10058994 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 181061802 is about 13455.9207042848. The cubic root of 181061802 is about 565.7296569242.

The spelling of 181061802 in words is "one hundred eighty-one million, sixty-one thousand, eight hundred two".