2597819655 has 16 divisors (see below), whose sum is σ = 4257890784. Its totient is φ = 1351710720.

The previous prime is 2597819621. The next prime is 2597819659. The reversal of 2597819655 is 5569187952.

It is a happy number.

It is not a de Polignac number, because 2597819655 - 2⁶ = 2597819591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2597819595 and 2597819604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2597819659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2111434 + ... + 2112663.

It is an arithmetic number, because the mean of its divisors is an integer number (266118174).

Almost surely, 2^2597819655 is an apocalyptic number.

2597819655 is a deficient number, since it is larger than the sum of its proper divisors (1660071129).

2597819655 is a wasteful number, since it uses less digits than its factorization.

2597819655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224146.

The product of its digits is 6804000, while the sum is 57.

The square root of 2597819655 is about 50968.8106100191. The cubic root of 2597819655 is about 1374.6843846396.

The spelling of 2597819655 in words is "two billion, five hundred ninety-seven million, eight hundred nineteen thousand, six hundred fifty-five".