158799133 has 2 divisors, whose sum is σ = 158799134. Its totient is φ = 158799132.

The previous prime is 158799089. The next prime is 158799181. The reversal of 158799133 is 331997851.

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., 137288089 + 21511044 = 11717^2 + 4638^2 .

It is a cyclic number.

It is not a de Polignac number, because 158799133 - 2⁹ = 158798621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158799733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79399566 + 79399567.

It is an arithmetic number, because the mean of its divisors is an integer number (79399567).

Almost surely, 2^158799133 is an apocalyptic number.

It is an amenable number.

158799133 is a deficient number, since it is larger than the sum of its proper divisors (1).

158799133 is an equidigital number, since it uses as much as digits as its factorization.

158799133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 46.

The square root of 158799133 is about 12601.5528011432. The cubic root of 158799133 is about 541.5219217611.

The spelling of 158799133 in words is "one hundred fifty-eight million, seven hundred ninety-nine thousand, one hundred thirty-three".