158197239 has 16 divisors (see below), whose sum is σ = 235552000. Its totient is φ = 104931288.

The previous prime is 158197219. The next prime is 158197261. The reversal of 158197239 is 932791851.

It is not a de Polignac number, because 158197239 - 2⁷ = 158197111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158197194 and 158197203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158197219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9349 + ... + 20094.

It is an arithmetic number, because the mean of its divisors is an integer number (14722000).

Almost surely, 2^158197239 is an apocalyptic number.

158197239 is a deficient number, since it is larger than the sum of its proper divisors (77354761).

158197239 is a wasteful number, since it uses less digits than its factorization.

158197239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29651 (or 29645 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 158197239 is about 12577.6483891068. The cubic root of 158197239 is about 540.8368813601.

The spelling of 158197239 in words is "one hundred fifty-eight million, one hundred ninety-seven thousand, two hundred thirty-nine".