2544263646 has 16 divisors (see below), whose sum is σ = 5206865664. Its totient is φ = 828364824.

The previous prime is 2544263633. The next prime is 2544263663. The reversal of 2544263646 is 6463624452.

It is a junction number, because it is equal to n+sod(n) for n = 2544263598 and 2544263607.

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, 4930486 + ... + 4931001.

It is an arithmetic number, because the mean of its divisors is an integer number (325429104).

Almost surely, 2^2544263646 is an apocalyptic number.

2544263646 is an abundant number, since it is smaller than the sum of its proper divisors (2662602018).

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

2544263646 is a wasteful number, since it uses less digits than its factorization.

2544263646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9861535.

The product of its digits is 829440, while the sum is 42.

The square root of 2544263646 is about 50440.6943449433. The cubic root of 2544263646 is about 1365.1719956625.

The spelling of 2544263646 in words is "two billion, five hundred forty-four million, two hundred sixty-three thousand, six hundred forty-six".