2115459191 has 2 divisors, whose sum is σ = 2115459192. Its totient is φ = 2115459190.

The previous prime is 2115459187. The next prime is 2115459197. The reversal of 2115459191 is 1919545112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2115459191 - 2² = 2115459187 is a prime.

It is a super-3 number, since 3×2115459191³ (a number of 29 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115459197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057729595 + 1057729596.

It is an arithmetic number, because the mean of its divisors is an integer number (1057729596).

Almost surely, 2^2115459191 is an apocalyptic number.

2115459191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115459191 is an equidigital number, since it uses as much as digits as its factorization.

2115459191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 38.

The square root of 2115459191 is about 45994.1212656574. The cubic root of 2115459191 is about 1283.7138217539.

The spelling of 2115459191 in words is "two billion, one hundred fifteen million, four hundred fifty-nine thousand, one hundred ninety-one".