2519999873 has 2 divisors, whose sum is σ = 2519999874. Its totient is φ = 2519999872.

The previous prime is 2519999861. The next prime is 2519999939. The reversal of 2519999873 is 3789999152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1933536784 + 586463089 = 43972^2 + 24217^2 .

It is a cyclic number.

It is not a de Polignac number, because 2519999873 - 2⁴ = 2519999857 is a prime.

It is a super-2 number, since 2×2519999873² = 12700798719840032258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2519999803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1259999936 + 1259999937.

It is an arithmetic number, because the mean of its divisors is an integer number (1259999937).

Almost surely, 2^2519999873 is an apocalyptic number.

It is an amenable number.

2519999873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2519999873 is an equidigital number, since it uses as much as digits as its factorization.

2519999873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 62.

The square root of 2519999873 is about 50199.6003270942. The cubic root of 2519999873 is about 1360.8184003304.

The spelling of 2519999873 in words is "two billion, five hundred nineteen million, nine hundred ninety-nine thousand, eight hundred seventy-three".