156906413 has 4 divisors (see below), whose sum is σ = 166136220. Its totient is φ = 147676608.

The previous prime is 156906401. The next prime is 156906439. The reversal of 156906413 is 314609651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314609651 = 211 ⋅1491041.

It can be written as a sum of positive squares in 2 ways, for example, as 91910569 + 64995844 = 9587^2 + 8062^2 .

It is a cyclic number.

It is not a de Polignac number, because 156906413 - 2⁸ = 156906157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156906473) 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, 4614878 + ... + 4614911.

It is an arithmetic number, because the mean of its divisors is an integer number (41534055).

Almost surely, 2^156906413 is an apocalyptic number.

It is an amenable number.

156906413 is a deficient number, since it is larger than the sum of its proper divisors (9229807).

156906413 is an equidigital number, since it uses as much as digits as its factorization.

156906413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9229806.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 156906413 is about 12526.2290015790. The cubic root of 156906413 is about 539.3618582024.

The spelling of 156906413 in words is "one hundred fifty-six million, nine hundred six thousand, four hundred thirteen".