158223668 has 12 divisors (see below), whose sum is σ = 277438980. Its totient is φ = 78955392.

The previous prime is 158223643. The next prime is 158223673. The reversal of 158223668 is 866322851.

158223668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 104611984 + 53611684 = 10228^2 + 7322^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 36821 + ... + 40892.

It is an arithmetic number, because the mean of its divisors is an integer number (23119915).

Almost surely, 2^158223668 is an apocalyptic number.

It is an amenable number.

158223668 is a deficient number, since it is larger than the sum of its proper divisors (119215312).

158223668 is a wasteful number, since it uses less digits than its factorization.

158223668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78226 (or 78224 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 158223668 is about 12578.6989788292. The cubic root of 158223668 is about 540.8669977349.

The spelling of 158223668 in words is "one hundred fifty-eight million, two hundred twenty-three thousand, six hundred sixty-eight".