158653989 has 18 divisors (see below), whose sum is σ = 248153490. Its totient is φ = 97632288.

The previous prime is 158653967. The next prime is 158653991. The reversal of 158653989 is 989356851.

It is a happy number.

158653989 is a `hidden beast` number, since 1 + 586 + 53 + 9 + 8 + 9 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 15444900 + 143209089 = 3930^2 + 11967^2 .

It is not a de Polignac number, because 158653989 - 2¹² = 158649893 is a prime.

It is a super-2 number, since 2×158653989² = 50342176451224242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158653949) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50634 + ... + 53675.

It is an arithmetic number, because the mean of its divisors is an integer number (13786305).

Almost surely, 2^158653989 is an apocalyptic number.

It is an amenable number.

158653989 is a deficient number, since it is larger than the sum of its proper divisors (89499501).

158653989 is a wasteful number, since it uses less digits than its factorization.

158653989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104341 (or 104325 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 158653989 is about 12595.7925117874. The cubic root of 158653989 is about 541.3568859804.

The spelling of 158653989 in words is "one hundred fifty-eight million, six hundred fifty-three thousand, nine hundred eighty-nine".