158307869 has 2 divisors, whose sum is σ = 158307870. Its totient is φ = 158307868.

The previous prime is 158307823. The next prime is 158307887. The reversal of 158307869 is 968703851.

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., 122367844 + 35940025 = 11062^2 + 5995^2 .

It is a cyclic number.

It is not a de Polignac number, because 158307869 - 2⁸ = 158307613 is a prime.

It is a super-2 number, since 2×158307869² = 50122762774642322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158307169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79153934 + 79153935.

It is an arithmetic number, because the mean of its divisors is an integer number (79153935).

Almost surely, 2^158307869 is an apocalyptic number.

It is an amenable number.

158307869 is a deficient number, since it is larger than the sum of its proper divisors (1).

158307869 is an equidigital number, since it uses as much as digits as its factorization.

158307869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 158307869 is about 12582.0455014278. The cubic root of 158307869 is about 540.9629241040.

The spelling of 158307869 in words is "one hundred fifty-eight million, three hundred seven thousand, eight hundred sixty-nine".