158980321 has 2 divisors, whose sum is σ = 158980322. Its totient is φ = 158980320.

The previous prime is 158980309. The next prime is 158980387. The reversal of 158980321 is 123089851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155351296 + 3629025 = 12464^2 + 1905^2 .

It is a cyclic number.

It is not a de Polignac number, because 158980321 - 2¹⁵ = 158947553 is a prime.

It is not a weakly prime, because it can be changed into another prime (158980621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79490160 + 79490161.

It is an arithmetic number, because the mean of its divisors is an integer number (79490161).

Almost surely, 2^158980321 is an apocalyptic number.

It is an amenable number.

158980321 is a deficient number, since it is larger than the sum of its proper divisors (1).

158980321 is an equidigital number, since it uses as much as digits as its factorization.

158980321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 158980321 is about 12608.7398656646. The cubic root of 158980321 is about 541.7278002585.

The spelling of 158980321 in words is "one hundred fifty-eight million, nine hundred eighty thousand, three hundred twenty-one".