2489567864 has 64 divisors (see below), whose sum is σ = 5387558400. Its totient is φ = 1056461184.

The previous prime is 2489567851. The next prime is 2489567879. The reversal of 2489567864 is 4687659842.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4759907 + ... + 4760429.

It is an arithmetic number, because the mean of its divisors is an integer number (84180600).

Almost surely, 2^2489567864 is an apocalyptic number.

It is an amenable number.

2489567864 is an abundant number, since it is smaller than the sum of its proper divisors (2897990536).

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

2489567864 is a wasteful number, since it uses less digits than its factorization.

2489567864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212 (or 1208 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 59.

The square root of 2489567864 is about 49895.5695828798. The cubic root of 2489567864 is about 1355.3183647563.

The spelling of 2489567864 in words is "two billion, four hundred eighty-nine million, five hundred sixty-seven thousand, eight hundred sixty-four".