158761643 has 2 divisors, whose sum is σ = 158761644. Its totient is φ = 158761642.

The previous prime is 158761627. The next prime is 158761693. The reversal of 158761643 is 346167851.

158761643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158761643 - 2⁴ = 158761627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158761643.

It is not a weakly prime, because it can be changed into another prime (158761613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79380821 + 79380822.

It is an arithmetic number, because the mean of its divisors is an integer number (79380822).

Almost surely, 2^158761643 is an apocalyptic number.

158761643 is a deficient number, since it is larger than the sum of its proper divisors (1).

158761643 is an equidigital number, since it uses as much as digits as its factorization.

158761643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 158761643 is about 12600.0651982440. The cubic root of 158761643 is about 541.4793034455.

The spelling of 158761643 in words is "one hundred fifty-eight million, seven hundred sixty-one thousand, six hundred forty-three".