2151513191 has 2 divisors, whose sum is σ = 2151513192. Its totient is φ = 2151513190.

The previous prime is 2151513187. The next prime is 2151513193. The reversal of 2151513191 is 1913151512.

2151513191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2151513191 - 2² = 2151513187 is a prime.

It is a super-2 number, since 2×2151513191² = 9258018022094004962, which contains 22 as substring.

Together with 2151513193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151513193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075756595 + 1075756596.

It is an arithmetic number, because the mean of its divisors is an integer number (1075756596).

Almost surely, 2^2151513191 is an apocalyptic number.

2151513191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151513191 is an equidigital number, since it uses as much as digits as its factorization.

2151513191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 29.

The square root of 2151513191 is about 46384.4067656362. The cubic root of 2151513191 is about 1290.9656033794.

The spelling of 2151513191 in words is "two billion, one hundred fifty-one million, five hundred thirteen thousand, one hundred ninety-one".