2749661616 has 40 divisors (see below), whose sum is σ = 7649701360. Its totient is φ = 846049536.

The previous prime is 2749661609. The next prime is 2749661641. The reversal of 2749661616 is 6161669472.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2202631 + ... + 2203878.

It is an arithmetic number, because the mean of its divisors is an integer number (191242534).

Almost surely, 2^2749661616 is an apocalyptic number.

2749661616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2749661616 is an abundant number, since it is smaller than the sum of its proper divisors (4900039744).

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

2749661616 is a wasteful number, since it uses less digits than its factorization.

2749661616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406533 (or 4406527 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 2749661616 is about 52437.2159444035. The cubic root of 2749661616 is about 1400.9621984083.

The spelling of 2749661616 in words is "two billion, seven hundred forty-nine million, six hundred sixty-one thousand, six hundred sixteen".