2749653680 has 40 divisors (see below), whose sum is σ = 6670903392. Its totient is φ = 1052040704.

The previous prime is 2749653671. The next prime is 2749653719. The reversal of 2749653680 is 863569472.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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, 745349 + ... + 749028.

Almost surely, 2^2749653680 is an apocalyptic number.

2749653680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2749653680 is an abundant number, since it is smaller than the sum of its proper divisors (3921249712).

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

2749653680 is a wasteful number, since it uses less digits than its factorization.

2749653680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494413 (or 1494407 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The square root of 2749653680 is about 52437.1402729020. The cubic root of 2749653680 is about 1400.9608506004.

The spelling of 2749653680 in words is "two billion, seven hundred forty-nine million, six hundred fifty-three thousand, six hundred eighty".