158447873 has 2 divisors, whose sum is σ = 158447874. Its totient is φ = 158447872.

The previous prime is 158447813. The next prime is 158447917. The reversal of 158447873 is 378744851.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130484929 + 27962944 = 11423^2 + 5288^2 .

It is an emirp because it is prime and its reverse (378744851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158447873 - 2⁸ = 158447617 is a prime.

It is not a weakly prime, because it can be changed into another prime (158447813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79223936 + 79223937.

It is an arithmetic number, because the mean of its divisors is an integer number (79223937).

Almost surely, 2^158447873 is an apocalyptic number.

It is an amenable number.

158447873 is a deficient number, since it is larger than the sum of its proper divisors (1).

158447873 is an equidigital number, since it uses as much as digits as its factorization.

158447873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 47.

The square root of 158447873 is about 12587.6079141352. The cubic root of 158447873 is about 541.1223490228.

The spelling of 158447873 in words is "one hundred fifty-eight million, four hundred forty-seven thousand, eight hundred seventy-three".