2519136491 has 2 divisors, whose sum is σ = 2519136492. Its totient is φ = 2519136490.

The previous prime is 2519136469. The next prime is 2519136493. The reversal of 2519136491 is 1946319152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2519136491 - 2²² = 2514942187 is a prime.

Together with 2519136493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2519136493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1259568245 + 1259568246.

It is an arithmetic number, because the mean of its divisors is an integer number (1259568246).

Almost surely, 2^2519136491 is an apocalyptic number.

2519136491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2519136491 is an equidigital number, since it uses as much as digits as its factorization.

2519136491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 2519136491 is about 50191.0000996195. Note that the first 4 decimals coincide. The cubic root of 2519136491 is about 1360.6629717092.

The spelling of 2519136491 in words is "two billion, five hundred nineteen million, one hundred thirty-six thousand, four hundred ninety-one".