158085065 has 4 divisors (see below), whose sum is σ = 189702084. Its totient is φ = 126468048.

The previous prime is 158085019. The next prime is 158085101. The reversal of 158085065 is 560580851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560580851 = 12757 ⋅43943.

It can be written as a sum of positive squares in 2 ways, for example, as 17330569 + 140754496 = 4163^2 + 11864^2 .

It is a cyclic number.

It is not a de Polignac number, because 158085065 - 2⁶ = 158085001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15808502 + ... + 15808511.

It is an arithmetic number, because the mean of its divisors is an integer number (47425521).

Almost surely, 2^158085065 is an apocalyptic number.

It is an amenable number.

158085065 is a deficient number, since it is larger than the sum of its proper divisors (31617019).

158085065 is an equidigital number, since it uses as much as digits as its factorization.

158085065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31617018.

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 158085065 is about 12573.1883386832. The cubic root of 158085065 is about 540.7090194965.

The spelling of 158085065 in words is "one hundred fifty-eight million, eighty-five thousand, sixty-five".