158629727989 has 2 divisors, whose sum is σ = 158629727990. Its totient is φ = 158629727988.

The previous prime is 158629727957. The next prime is 158629728011. The reversal of 158629727989 is 989727926851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114931170225 + 43698557764 = 339015^2 + 209042^2 .

It is an emirp because it is prime and its reverse (989727926851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158629727989 - 2⁵ = 158629727957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158629724989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79314863994 + 79314863995.

It is an arithmetic number, because the mean of its divisors is an integer number (79314863995).

Almost surely, 2^158629727989 is an apocalyptic number.

It is an amenable number.

158629727989 is a deficient number, since it is larger than the sum of its proper divisors (1).

158629727989 is an equidigital number, since it uses as much as digits as its factorization.

158629727989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 274337280, while the sum is 73.

The spelling of 158629727989 in words is "one hundred fifty-eight billion, six hundred twenty-nine million, seven hundred twenty-seven thousand, nine hundred eighty-nine".