181583130 has 16 divisors (see below), whose sum is σ = 435799584. Its totient is φ = 48422160.

The previous prime is 181583117. The next prime is 181583147. The reversal of 181583130 is 31385181.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 6052771 = 181583130 / (1 + 8 + 1 + 5 + 8 + 3 + 1 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3026356 + ... + 3026415.

It is an arithmetic number, because the mean of its divisors is an integer number (27237474).

Almost surely, 2^181583130 is an apocalyptic number.

181583130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181583130 is an abundant number, since it is smaller than the sum of its proper divisors (254216454).

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

181583130 is a wasteful number, since it uses less digits than its factorization.

181583130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6052781.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 181583130 is about 13475.2784757867. The cubic root of 181583130 is about 566.2721017254.

The spelling of 181583130 in words is "one hundred eighty-one million, five hundred eighty-three thousand, one hundred thirty".