2528261913 has 16 divisors (see below), whose sum is σ = 3724500096. Its totient is φ = 1517387520.

The previous prime is 2528261909. The next prime is 2528262053. The reversal of 2528261913 is 3191628252.

2528261913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2528261913 - 2² = 2528261909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2528261413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1076518 + ... + 1078863.

It is an arithmetic number, because the mean of its divisors is an integer number (232781256).

Almost surely, 2^2528261913 is an apocalyptic number.

2528261913 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2528261913 is a deficient number, since it is larger than the sum of its proper divisors (1196238183).

2528261913 is a wasteful number, since it uses less digits than its factorization.

2528261913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155424.

The product of its digits is 51840, while the sum is 39.

The square root of 2528261913 is about 50281.8248773849. The cubic root of 2528261913 is about 1362.3039653769.

The spelling of 2528261913 in words is "two billion, five hundred twenty-eight million, two hundred sixty-one thousand, nine hundred thirteen".