2783639149 has 2 divisors, whose sum is σ = 2783639150. Its totient is φ = 2783639148.

The previous prime is 2783639113. The next prime is 2783639161. The reversal of 2783639149 is 9419363872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2694336649 + 89302500 = 51907^2 + 9450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2783639149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2783639096 and 2783639105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2483639149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391819574 + 1391819575.

It is an arithmetic number, because the mean of its divisors is an integer number (1391819575).

Almost surely, 2^2783639149 is an apocalyptic number.

It is an amenable number.

2783639149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2783639149 is an equidigital number, since it uses as much as digits as its factorization.

2783639149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 2783639149 is about 52760.2042168148. The cubic root of 2783639149 is about 1406.7091486001.

The spelling of 2783639149 in words is "two billion, seven hundred eighty-three million, six hundred thirty-nine thousand, one hundred forty-nine".