156982869 has 6 divisors (see below), whose sum is σ = 226753046. Its totient is φ = 104655240.

The previous prime is 156982849. The next prime is 156982871. The reversal of 156982869 is 968289651.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 153512100 + 3470769 = 12390^2 + 1863^2 .

It is not a de Polignac number, because 156982869 - 2⁷ = 156982741 is a prime.

It is a super-2 number, since 2×156982869² = 49287242318942322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156982849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8721262 + ... + 8721279.

Almost surely, 2^156982869 is an apocalyptic number.

It is an amenable number.

156982869 is a deficient number, since it is larger than the sum of its proper divisors (69770177).

156982869 is a wasteful number, since it uses less digits than its factorization.

156982869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17442547 (or 17442544 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 156982869 is about 12529.2804661720. The cubic root of 156982869 is about 539.4494491710.

The spelling of 156982869 in words is "one hundred fifty-six million, nine hundred eighty-two thousand, eight hundred sixty-nine".