2528581923 has 24 divisors (see below), whose sum is σ = 4185579008. Its totient is φ = 1440953712.

The previous prime is 2528581919. The next prime is 2528581927. The reversal of 2528581923 is 3291858252.

2528581923 is a `hidden beast` number, since 25 + 28 + 581 + 9 + 23 = 666.

2528581923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2528581919) and next prime (2528581927).

It is not a de Polignac number, because 2528581923 - 2² = 2528581919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2528581927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31561 + ... + 77802.

Almost surely, 2^2528581923 is an apocalyptic number.

2528581923 is a deficient number, since it is larger than the sum of its proper divisors (1656997085).

2528581923 is a wasteful number, since it uses less digits than its factorization.

2528581923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109743 (or 109740 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 2528581923 is about 50285.0069404390. The cubic root of 2528581923 is about 1362.3614399735.

The spelling of 2528581923 in words is "two billion, five hundred twenty-eight million, five hundred eighty-one thousand, nine hundred twenty-three".