159191951 has 2 divisors, whose sum is σ = 159191952. Its totient is φ = 159191950.

The previous prime is 159191941. The next prime is 159191953.

159191951 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 159191951 - 2⁶ = 159191887 is a prime.

Together with 159191953, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_8931659 and since 159191951 and 8931659 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 159191899 and 159191908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159191953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79595975 + 79595976.

It is an arithmetic number, because the mean of its divisors is an integer number (79595976).

Almost surely, 2^159191951 is an apocalyptic number.

159191951 is a deficient number, since it is larger than the sum of its proper divisors (1).

159191951 is an equidigital number, since it uses as much as digits as its factorization.

159191951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18225, while the sum is 41.

The square root of 159191951 is about 12617.1292693703. The cubic root of 159191951 is about 541.9680711301.

The spelling of 159191951 in words is "one hundred fifty-nine million, one hundred ninety-one thousand, nine hundred fifty-one".