159097819 has 2 divisors, whose sum is σ = 159097820. Its totient is φ = 159097818.

The previous prime is 159097801. The next prime is 159097889. The reversal of 159097819 is 918790951.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159097819 - 2⁹ = 159097307 is a prime.

It is a super-2 number, since 2×159097819² = 50624232021113522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (159097889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79548909 + 79548910.

It is an arithmetic number, because the mean of its divisors is an integer number (79548910).

Almost surely, 2^159097819 is an apocalyptic number.

159097819 is a deficient number, since it is larger than the sum of its proper divisors (1).

159097819 is an equidigital number, since it uses as much as digits as its factorization.

159097819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 49.

The square root of 159097819 is about 12613.3983921860. The cubic root of 159097819 is about 541.8612261190.

The spelling of 159097819 in words is "one hundred fifty-nine million, ninety-seven thousand, eight hundred nineteen".