16130181 has 4 divisors (see below), whose sum is σ = 21506912. Its totient is φ = 10753452.

The previous prime is 16130167. The next prime is 16130189. The reversal of 16130181 is 18103161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16130181 - 2¹⁸ = 15868037 is a prime.

It is a super-2 number, since 2×16130181² = 520365478185522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16130189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2688361 + ... + 2688366.

It is an arithmetic number, because the mean of its divisors is an integer number (5376728).

Almost surely, 2^16130181 is an apocalyptic number.

It is an amenable number.

16130181 is a deficient number, since it is larger than the sum of its proper divisors (5376731).

16130181 is an equidigital number, since it uses as much as digits as its factorization.

16130181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376730.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 16130181 is about 4016.2396591837. The cubic root of 16130181 is about 252.6657722655.

The spelling of 16130181 in words is "sixteen million, one hundred thirty thousand, one hundred eighty-one".