2582864397 has 12 divisors (see below), whose sum is σ = 3731361660. Its totient is φ = 1721652288.

The previous prime is 2582864371. The next prime is 2582864399. The reversal of 2582864397 is 7934682852.

2582864397 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1207493001 + 1375371396 = 34749^2 + 37086^2 .

It is not a de Polignac number, because 2582864397 - 2⁷ = 2582864269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2582864399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57379 + ... + 91967.

It is an arithmetic number, because the mean of its divisors is an integer number (310946805).

Almost surely, 2^2582864397 is an apocalyptic number.

It is an amenable number.

2582864397 is a deficient number, since it is larger than the sum of its proper divisors (1148497263).

2582864397 is a wasteful number, since it uses less digits than its factorization.

2582864397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42892 (or 42889 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 2582864397 is about 50821.8889554491. Note that the first 3 decimals coincide. The cubic root of 2582864397 is about 1372.0413557064.

The spelling of 2582864397 in words is "two billion, five hundred eighty-two million, eight hundred sixty-four thousand, three hundred ninety-seven".