156838789 has 6 divisors (see below), whose sum is σ = 157419474. Its totient is φ = 156260160.

The previous prime is 156838751. The next prime is 156838793. The reversal of 156838789 is 987838651.

It can be written as a sum of positive squares in 3 ways, for example, as 2656900 + 154181889 = 1630^2 + 12417^2 .

It is not a de Polignac number, because 156838789 - 2¹¹ = 156836741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156838729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112879 + ... + 114259.

It is an arithmetic number, because the mean of its divisors is an integer number (26236579).

Almost surely, 2^156838789 is an apocalyptic number.

It is an amenable number.

156838789 is a deficient number, since it is larger than the sum of its proper divisors (580685).

156838789 is an frugal number, since it uses more digits than its factorization.

156838789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 1718 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The square root of 156838789 is about 12523.5294146658. The cubic root of 156838789 is about 539.2843618003.

The spelling of 156838789 in words is "one hundred fifty-six million, eight hundred thirty-eight thousand, seven hundred eighty-nine".