181404130 has 8 divisors (see below), whose sum is σ = 326527452. Its totient is φ = 72561648.

The previous prime is 181404109. The next prime is 181404163. The reversal of 181404130 is 31404181.

It can be written as a sum of positive squares in 2 ways, for example, as 180875601 + 528529 = 13449^2 + 727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 9070197 + ... + 9070216.

Almost surely, 2^181404130 is an apocalyptic number.

181404130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181404130 is a deficient number, since it is larger than the sum of its proper divisors (145123322).

181404130 is a wasteful number, since it uses less digits than its factorization.

181404130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18140420.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 181404130 is about 13468.6350459132. The cubic root of 181404130 is about 566.0859683708.

The spelling of 181404130 in words is "one hundred eighty-one million, four hundred four thousand, one hundred thirty".