8249915519 has 2 divisors, whose sum is σ = 8249915520. Its totient is φ = 8249915518.

The previous prime is 8249915507. The next prime is 8249915521. The reversal of 8249915519 is 9155199428.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8249915519 - 2²⁰ = 8248866943 is a prime.

It is a super-2 number, since 2×8249915519² (a number of 21 digits) contains 22 as substring.

Together with 8249915521, 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 (8249915549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4124957759 + 4124957760.

It is an arithmetic number, because the mean of its divisors is an integer number (4124957760).

Almost surely, 2^8249915519 is an apocalyptic number.

8249915519 is a deficient number, since it is larger than the sum of its proper divisors (1).

8249915519 is an equidigital number, since it uses as much as digits as its factorization.

8249915519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 53.

The square root of 8249915519 is about 90829.0455691350. The cubic root of 8249915519 is about 2020.6131131563.

The spelling of 8249915519 in words is "eight billion, two hundred forty-nine million, nine hundred fifteen thousand, five hundred nineteen".