158043623 has 4 divisors (see below), whose sum is σ = 158990160. Its totient is φ = 157097088.

The previous prime is 158043617. The next prime is 158043727. The reversal of 158043623 is 326340851.

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

It is a cyclic number.

It is not a de Polignac number, because 158043623 - 2¹⁸ = 157781479 is a prime.

It is a super-2 number, since 2×158043623² = 49955573541932258, which contains 22 as substring.

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 158043623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158043023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473018 + ... + 473351.

It is an arithmetic number, because the mean of its divisors is an integer number (39747540).

Almost surely, 2^158043623 is an apocalyptic number.

158043623 is a deficient number, since it is larger than the sum of its proper divisors (946537).

158043623 is an equidigital number, since it uses as much as digits as its factorization.

158043623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946536.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 158043623 is about 12571.5401999914. The cubic root of 158043623 is about 540.6617664104.

The spelling of 158043623 in words is "one hundred fifty-eight million, forty-three thousand, six hundred twenty-three".