158745823 has 4 divisors (see below), whose sum is σ = 163866688. Its totient is φ = 153624960.

The previous prime is 158745803. The next prime is 158745827. The reversal of 158745823 is 328547851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158745823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158745823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158745827) 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, 2560386 + ... + 2560447.

It is an arithmetic number, because the mean of its divisors is an integer number (40966672).

Almost surely, 2^158745823 is an apocalyptic number.

158745823 is a deficient number, since it is larger than the sum of its proper divisors (5120865).

158745823 is an equidigital number, since it uses as much as digits as its factorization.

158745823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120864.

The product of its digits is 268800, while the sum is 43.

The square root of 158745823 is about 12599.4374080750. The cubic root of 158745823 is about 541.4613173901.

The spelling of 158745823 in words is "one hundred fifty-eight million, seven hundred forty-five thousand, eight hundred twenty-three".