158680009 has 2 divisors, whose sum is σ = 158680010. Its totient is φ = 158680008.

The previous prime is 158679991. The next prime is 158680021. The reversal of 158680009 is 900086851.

158680009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156950784 + 1729225 = 12528^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 158680009 - 2¹⁹ = 158155721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158680009.

It is not a weakly prime, because it can be changed into another prime (158680079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79340004 + 79340005.

It is an arithmetic number, because the mean of its divisors is an integer number (79340005).

Almost surely, 2^158680009 is an apocalyptic number.

It is an amenable number.

158680009 is a deficient number, since it is larger than the sum of its proper divisors (1).

158680009 is an equidigital number, since it uses as much as digits as its factorization.

158680009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 158680009 is about 12596.8253540327. The cubic root of 158680009 is about 541.3864793874.

The spelling of 158680009 in words is "one hundred fifty-eight million, six hundred eighty thousand, nine".