2718249949 has 2 divisors, whose sum is σ = 2718249950. Its totient is φ = 2718249948.

The previous prime is 2718249943. The next prime is 2718249967. The reversal of 2718249949 is 9499428172.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2521044100 + 197205849 = 50210^2 + 14043^2 .

It is a cyclic number.

It is not a de Polignac number, because 2718249949 - 2¹⁷ = 2718118877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2718249949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2718249943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1359124974 + 1359124975.

It is an arithmetic number, because the mean of its divisors is an integer number (1359124975).

Almost surely, 2^2718249949 is an apocalyptic number.

It is an amenable number.

2718249949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2718249949 is an equidigital number, since it uses as much as digits as its factorization.

2718249949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 55.

The square root of 2718249949 is about 52136.8386939600. The cubic root of 2718249949 is about 1395.6069692448.

The spelling of 2718249949 in words is "two billion, seven hundred eighteen million, two hundred forty-nine thousand, nine hundred forty-nine".