158191841 has 2 divisors, whose sum is σ = 158191842. Its totient is φ = 158191840.

The previous prime is 158191837. The next prime is 158191867. The reversal of 158191841 is 148191851.

158191841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117180625 + 41011216 = 10825^2 + 6404^2 .

It is an emirp because it is prime and its reverse (148191851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158191841 - 2² = 158191837 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 158191795 and 158191804.

It is not a weakly prime, because it can be changed into another prime (158191811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79095920 + 79095921.

It is an arithmetic number, because the mean of its divisors is an integer number (79095921).

Almost surely, 2^158191841 is an apocalyptic number.

It is an amenable number.

158191841 is a deficient number, since it is larger than the sum of its proper divisors (1).

158191841 is an equidigital number, since it uses as much as digits as its factorization.

158191841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 38.

The square root of 158191841 is about 12577.4338002631. The cubic root of 158191841 is about 540.8307298185.

The spelling of 158191841 in words is "one hundred fifty-eight million, one hundred ninety-one thousand, eight hundred forty-one".