158500073 has 2 divisors, whose sum is σ = 158500074. Its totient is φ = 158500072.

The previous prime is 158500057. The next prime is 158500081. The reversal of 158500073 is 370005851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158055184 + 444889 = 12572^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 158500073 - 2⁴ = 158500057 is a prime.

It is not a weakly prime, because it can be changed into another prime (158500973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79250036 + 79250037.

It is an arithmetic number, because the mean of its divisors is an integer number (79250037).

Almost surely, 2^158500073 is an apocalyptic number.

It is an amenable number.

158500073 is a deficient number, since it is larger than the sum of its proper divisors (1).

158500073 is an equidigital number, since it uses as much as digits as its factorization.

158500073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 158500073 is about 12589.6812112142. The cubic root of 158500073 is about 541.1817660091.

The spelling of 158500073 in words is "one hundred fifty-eight million, five hundred thousand, seventy-three".