2765630389 has 2 divisors, whose sum is σ = 2765630390. Its totient is φ = 2765630388.

The previous prime is 2765630339. The next prime is 2765630437. The reversal of 2765630389 is 9830365672.

It is a happy number.

2765630389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2763289489 + 2340900 = 52567^2 + 1530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2765630389 is a prime.

It is a super-2 number, since 2×2765630389² = 15297422897120582642, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2765630339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1382815194 + 1382815195.

It is an arithmetic number, because the mean of its divisors is an integer number (1382815195).

Almost surely, 2^2765630389 is an apocalyptic number.

It is an amenable number.

2765630389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2765630389 is an equidigital number, since it uses as much as digits as its factorization.

2765630389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The square root of 2765630389 is about 52589.2611566278. The cubic root of 2765630389 is about 1403.6690137126.

The spelling of 2765630389 in words is "two billion, seven hundred sixty-five million, six hundred thirty thousand, three hundred eighty-nine".