158711489 has 2 divisors, whose sum is σ = 158711490. Its totient is φ = 158711488.

The previous prime is 158711471. The next prime is 158711513. The reversal of 158711489 is 984117851.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130142464 + 28569025 = 11408^2 + 5345^2 .

It is a cyclic number.

It is not a de Polignac number, because 158711489 - 2⁸ = 158711233 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (158711429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79355744 + 79355745.

It is an arithmetic number, because the mean of its divisors is an integer number (79355745).

Almost surely, 2^158711489 is an apocalyptic number.

It is an amenable number.

158711489 is a deficient number, since it is larger than the sum of its proper divisors (1).

158711489 is an equidigital number, since it uses as much as digits as its factorization.

158711489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 44.

The square root of 158711489 is about 12598.0748132403. The cubic root of 158711489 is about 541.4222783087.

The spelling of 158711489 in words is "one hundred fifty-eight million, seven hundred eleven thousand, four hundred eighty-nine".