156189113 has 4 divisors (see below), whose sum is σ = 162979968. Its totient is φ = 149398260.

The previous prime is 156189091. The next prime is 156189133. The reversal of 156189113 is 311981651.

It is a happy number.

156189113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 311981651 = 2027 ⋅153913.

It is a cyclic number.

It is not a de Polignac number, because 156189113 - 2¹² = 156185017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156189133) 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, 3395393 + ... + 3395438.

It is an arithmetic number, because the mean of its divisors is an integer number (40744992).

Almost surely, 2^156189113 is an apocalyptic number.

It is an amenable number.

156189113 is a deficient number, since it is larger than the sum of its proper divisors (6790855).

156189113 is an equidigital number, since it uses as much as digits as its factorization.

156189113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6790854.

The product of its digits is 6480, while the sum is 35.

The square root of 156189113 is about 12497.5642826912. The cubic root of 156189113 is about 538.5387023173.

The spelling of 156189113 in words is "one hundred fifty-six million, one hundred eighty-nine thousand, one hundred thirteen".