2249139043849 has 12 divisors (see below), whose sum is σ = 2434303540044. Its totient is φ = 2076896417024.

The previous prime is 2249139043819. The next prime is 2249139043859. The reversal of 2249139043849 is 9483409319422.

It can be written as a sum of positive squares in 6 ways, for example, as 878707449 + 2248260336400 = 29643^2 + 1499420^2 .

It is not a de Polignac number, because 2249139043849 - 2¹³ = 2249139035657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2249139043793 and 2249139043802.

It is not an unprimeable number, because it can be changed into a prime (2249139043819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73404382 + ... + 73435015.

It is an arithmetic number, because the mean of its divisors is an integer number (202858628337).

Almost surely, 2^{2249139043849} is an apocalyptic number.

It is an amenable number.

2249139043849 is a deficient number, since it is larger than the sum of its proper divisors (185164496195).

2249139043849 is a wasteful number, since it uses less digits than its factorization.

2249139043849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146839484 (or 146839467 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 58.

The spelling of 2249139043849 in words is "two trillion, two hundred forty-nine billion, one hundred thirty-nine million, forty-three thousand, eight hundred forty-nine".