2747491643 has 24 divisors (see below), whose sum is σ = 3055988736. Its totient is φ = 2467826400.

The previous prime is 2747491613. The next prime is 2747491687. The reversal of 2747491643 is 3461947472.

It is not a de Polignac number, because 2747491643 - 2²⁶ = 2680382779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2747491613) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1516208 + ... + 1518018.

It is an arithmetic number, because the mean of its divisors is an integer number (127332864).

Almost surely, 2^2747491643 is an apocalyptic number.

2747491643 is a deficient number, since it is larger than the sum of its proper divisors (308497093).

2747491643 is a wasteful number, since it uses less digits than its factorization.

2747491643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075 (or 2062 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The square root of 2747491643 is about 52416.5207067390. The cubic root of 2747491643 is about 1400.5935651443.

The spelling of 2747491643 in words is "two billion, seven hundred forty-seven million, four hundred ninety-one thousand, six hundred forty-three".