2738442649 has 8 divisors (see below), whose sum is σ = 2811100160. Its totient is φ = 2666735136.

The previous prime is 2738442613. The next prime is 2738442661. The reversal of 2738442649 is 9462448372.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2738442649 - 2³¹ = 590959001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2738422649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231657 + ... + 243190.

It is an arithmetic number, because the mean of its divisors is an integer number (351387520).

Almost surely, 2^2738442649 is an apocalyptic number.

It is an amenable number.

2738442649 is a deficient number, since it is larger than the sum of its proper divisors (72657511).

2738442649 is an equidigital number, since it uses as much as digits as its factorization.

2738442649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474999.

The product of its digits is 2322432, while the sum is 49.

The square root of 2738442649 is about 52330.1313680751. The cubic root of 2738442649 is about 1399.0542335126.

The spelling of 2738442649 in words is "two billion, seven hundred thirty-eight million, four hundred forty-two thousand, six hundred forty-nine".