158241865 has 16 divisors (see below), whose sum is σ = 201457152. Its totient is φ = 118911744.

The previous prime is 158241857. The next prime is 158241877. The reversal of 158241865 is 568142851.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 158241865 - 2³ = 158241857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50062 + ... + 53128.

It is an arithmetic number, because the mean of its divisors is an integer number (12591072).

Almost surely, 2^158241865 is an apocalyptic number.

It is an amenable number.

158241865 is a deficient number, since it is larger than the sum of its proper divisors (43215287).

158241865 is a wasteful number, since it uses less digits than its factorization.

158241865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696.

The product of its digits is 76800, while the sum is 40.

The square root of 158241865 is about 12579.4222840320. The cubic root of 158241865 is about 540.8877316314.

It can be divided in two parts, 15824 and 1865, that added together give a square (17689 = 133²).

The spelling of 158241865 in words is "one hundred fifty-eight million, two hundred forty-one thousand, eight hundred sixty-five".