156440113 has 2 divisors, whose sum is σ = 156440114. Its totient is φ = 156440112.

The previous prime is 156440101. The next prime is 156440117. The reversal of 156440113 is 311044651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139523344 + 16916769 = 11812^2 + 4113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156440113 is a prime.

It is not a weakly prime, because it can be changed into another prime (156440117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78220056 + 78220057.

It is an arithmetic number, because the mean of its divisors is an integer number (78220057).

Almost surely, 2^156440113 is an apocalyptic number.

It is an amenable number.

156440113 is a deficient number, since it is larger than the sum of its proper divisors (1).

156440113 is an equidigital number, since it uses as much as digits as its factorization.

156440113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 156440113 is about 12507.6022082572. The cubic root of 156440113 is about 538.8270298609.

Adding to 156440113 its reverse (311044651), we get a palindrome (467484764).

The spelling of 156440113 in words is "one hundred fifty-six million, four hundred forty thousand, one hundred thirteen".