2645600389 has 2 divisors, whose sum is σ = 2645600390. Its totient is φ = 2645600388.

The previous prime is 2645600303. The next prime is 2645600393. The reversal of 2645600389 is 9830065462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2423888289 + 221712100 = 49233^2 + 14890^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645600389 - 2¹⁹ = 2645076101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645600689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322800194 + 1322800195.

It is an arithmetic number, because the mean of its divisors is an integer number (1322800195).

Almost surely, 2^2645600389 is an apocalyptic number.

It is an amenable number.

2645600389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645600389 is an equidigital number, since it uses as much as digits as its factorization.

2645600389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2645600389 is about 51435.4001539796. The cubic root of 2645600389 is about 1383.0612551983.

The spelling of 2645600389 in words is "two billion, six hundred forty-five million, six hundred thousand, three hundred eighty-nine".