2549745019 has 2 divisors, whose sum is σ = 2549745020. Its totient is φ = 2549745018.

The previous prime is 2549745001. The next prime is 2549745053. The reversal of 2549745019 is 9105479452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2549745019 - 2¹⁵ = 2549712251 is a prime.

It is a super-2 number, since 2×2549745019² = 13002399323830620722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2549745019.

It is not a weakly prime, because it can be changed into another prime (2549745089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1274872509 + 1274872510.

It is an arithmetic number, because the mean of its divisors is an integer number (1274872510).

Almost surely, 2^2549745019 is an apocalyptic number.

2549745019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2549745019 is an equidigital number, since it uses as much as digits as its factorization.

2549745019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 2549745019 is about 50494.9999405882. Note that the first 4 decimals coincide. The cubic root of 2549745019 is about 1366.1516700156.

The spelling of 2549745019 in words is "two billion, five hundred forty-nine million, seven hundred forty-five thousand, nineteen".