2528865739 has 2 divisors, whose sum is σ = 2528865740. Its totient is φ = 2528865738.

The previous prime is 2528865737. The next prime is 2528865767. The reversal of 2528865739 is 9375688252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2528865739 - 2¹ = 2528865737 is a prime.

It is a super-2 number, since 2×2528865739² = 12790323851776032242, which contains 22 as substring.

Together with 2528865737, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2528865739.

It is not a weakly prime, because it can be changed into another prime (2528865737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264432869 + 1264432870.

It is an arithmetic number, because the mean of its divisors is an integer number (1264432870).

Almost surely, 2^2528865739 is an apocalyptic number.

2528865739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2528865739 is an equidigital number, since it uses as much as digits as its factorization.

2528865739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 55.

The square root of 2528865739 is about 50287.8289350415. The cubic root of 2528865739 is about 1362.4124099796.

The spelling of 2528865739 in words is "two billion, five hundred twenty-eight million, eight hundred sixty-five thousand, seven hundred thirty-nine".