158195291 has 2 divisors, whose sum is σ = 158195292. Its totient is φ = 158195290.

The previous prime is 158195287. The next prime is 158195293. The reversal of 158195291 is 192591851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158195291 - 2² = 158195287 is a prime.

Together with 158195293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158195293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79097645 + 79097646.

It is an arithmetic number, because the mean of its divisors is an integer number (79097646).

Almost surely, 2^158195291 is an apocalyptic number.

158195291 is a deficient number, since it is larger than the sum of its proper divisors (1).

158195291 is an equidigital number, since it uses as much as digits as its factorization.

158195291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 41.

The square root of 158195291 is about 12577.5709499092. The cubic root of 158195291 is about 540.8346614424.

The spelling of 158195291 in words is "one hundred fifty-eight million, one hundred ninety-five thousand, two hundred ninety-one".