2564953998 has 16 divisors (see below), whose sum is σ = 5179714176. Its totient is φ = 846683640.

The previous prime is 2564953957. The next prime is 2564954009. The reversal of 2564953998 is 8993594652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2074588 + ... + 2075823.

It is an arithmetic number, because the mean of its divisors is an integer number (323732136).

Almost surely, 2^2564953998 is an apocalyptic number.

2564953998 is an abundant number, since it is smaller than the sum of its proper divisors (2614760178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2564953998 is a wasteful number, since it uses less digits than its factorization.

2564953998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150519.

The product of its digits is 20995200, while the sum is 60.

The square root of 2564953998 is about 50645.3748924815. The cubic root of 2564953998 is about 1368.8626072281.

The spelling of 2564953998 in words is "two billion, five hundred sixty-four million, nine hundred fifty-three thousand, nine hundred ninety-eight".