158943969 has 12 divisors (see below), whose sum is σ = 230163492. Its totient is φ = 105696000.

The previous prime is 158943871. The next prime is 158943973. The reversal of 158943969 is 969349851.

158943969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 133056225 + 25887744 = 11535^2 + 5088^2 .

It is not a de Polignac number, because 158943969 - 2¹⁵ = 158911201 is a prime.

It is a super-2 number, since 2×158943969² = 50526370562945922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158943269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18412 + ... + 25629.

It is an arithmetic number, because the mean of its divisors is an integer number (19180291).

Almost surely, 2^158943969 is an apocalyptic number.

It is an amenable number.

158943969 is a deficient number, since it is larger than the sum of its proper divisors (71219523).

158943969 is a wasteful number, since it uses less digits than its factorization.

158943969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44448 (or 44445 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 158943969 is about 12607.2982434779. The cubic root of 158943969 is about 541.6865071181.

The spelling of 158943969 in words is "one hundred fifty-eight million, nine hundred forty-three thousand, nine hundred sixty-nine".