156413389 has 4 divisors (see below), whose sum is σ = 170632800. Its totient is φ = 142193980.

The previous prime is 156413381. The next prime is 156413437. The reversal of 156413389 is 983314651.

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: 983314651 = 11 ⋅89392241.

It is a cyclic number.

It is not a de Polignac number, because 156413389 - 2³ = 156413381 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156413381) 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, 7109689 + ... + 7109710.

It is an arithmetic number, because the mean of its divisors is an integer number (42658200).

Almost surely, 2^156413389 is an apocalyptic number.

It is an amenable number.

156413389 is a deficient number, since it is larger than the sum of its proper divisors (14219411).

156413389 is a wasteful number, since it uses less digits than its factorization.

156413389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14219410.

The product of its digits is 77760, while the sum is 40.

The square root of 156413389 is about 12506.5338523509. The cubic root of 156413389 is about 538.7963462694.

The spelling of 156413389 in words is "one hundred fifty-six million, four hundred thirteen thousand, three hundred eighty-nine".