2519779459 has 2 divisors, whose sum is σ = 2519779460. Its totient is φ = 2519779458.

The previous prime is 2519779393. The next prime is 2519779511. The reversal of 2519779459 is 9549779152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2519779459 - 2¹¹ = 2519777411 is a prime.

It is not a weakly prime, because it can be changed into another prime (2519779859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1259889729 + 1259889730.

It is an arithmetic number, because the mean of its divisors is an integer number (1259889730).

Almost surely, 2^2519779459 is an apocalyptic number.

2519779459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2519779459 is an equidigital number, since it uses as much as digits as its factorization.

2519779459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7144200, while the sum is 58.

The square root of 2519779459 is about 50197.4049030425. The cubic root of 2519779459 is about 1360.7787241151.

The spelling of 2519779459 in words is "two billion, five hundred nineteen million, seven hundred seventy-nine thousand, four hundred fifty-nine".