2549208864 has 96 divisors (see below), whose sum is σ = 7208054784. Its totient is φ = 786551040.

The previous prime is 2549208839. The next prime is 2549208881. The reversal of 2549208864 is 4688029452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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, 49827 + ... + 87069.

It is an arithmetic number, because the mean of its divisors is an integer number (75083904).

Almost surely, 2^2549208864 is an apocalyptic number.

2549208864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2549208864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3604027392).

2549208864 is an abundant number, since it is smaller than the sum of its proper divisors (4658845920).

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

2549208864 is a wasteful number, since it uses less digits than its factorization.

2549208864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37310 (or 37302 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 2549208864 is about 50489.6906704725. The cubic root of 2549208864 is about 1366.0559061399.

The spelling of 2549208864 in words is "two billion, five hundred forty-nine million, two hundred eight thousand, eight hundred sixty-four".