181020104 has 16 divisors (see below), whose sum is σ = 341174220. Its totient is φ = 90040320.

The previous prime is 181020079. The next prime is 181020113. The reversal of 181020104 is 401020181.

It can be written as a sum of positive squares in 2 ways, for example, as 156000100 + 25020004 = 12490^2 + 5002^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57077 + ... + 60164.

Almost surely, 2^181020104 is an apocalyptic number.

It is an amenable number.

181020104 is a deficient number, since it is larger than the sum of its proper divisors (160154116).

181020104 is a wasteful number, since it uses less digits than its factorization.

181020104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117440 (or 117436 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 181020104 is about 13454.3711856036. The cubic root of 181020104 is about 565.6862249650.

Adding to 181020104 its reverse (401020181), we get a palindrome (582040285).

The spelling of 181020104 in words is "one hundred eighty-one million, twenty thousand, one hundred four".