2644629149 has 2 divisors, whose sum is σ = 2644629150. Its totient is φ = 2644629148.

The previous prime is 2644629137. The next prime is 2644629167. The reversal of 2644629149 is 9419264462.

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., 2274336100 + 370293049 = 47690^2 + 19243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2644629149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644620149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322314574 + 1322314575.

It is an arithmetic number, because the mean of its divisors is an integer number (1322314575).

Almost surely, 2^2644629149 is an apocalyptic number.

It is an amenable number.

2644629149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644629149 is an equidigital number, since it uses as much as digits as its factorization.

2644629149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 47.

The square root of 2644629149 is about 51425.9579298237. The cubic root of 2644629149 is about 1382.8919869000.

The spelling of 2644629149 in words is "two billion, six hundred forty-four million, six hundred twenty-nine thousand, one hundred forty-nine".