158734609 has 4 divisors (see below), whose sum is σ = 173165040. Its totient is φ = 144304180.

The previous prime is 158734579. The next prime is 158734613. The reversal of 158734609 is 906437851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 158734609 - 2⁷ = 158734481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158734619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7215199 + ... + 7215220.

It is an arithmetic number, because the mean of its divisors is an integer number (43291260).

Almost surely, 2^158734609 is an apocalyptic number.

It is an amenable number.

158734609 is a deficient number, since it is larger than the sum of its proper divisors (14430431).

158734609 is a wasteful number, since it uses less digits than its factorization.

158734609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14430430.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 158734609 is about 12598.9923803453. The cubic root of 158734609 is about 541.4485672589.

The spelling of 158734609 in words is "one hundred fifty-eight million, seven hundred thirty-four thousand, six hundred nine".