2744640731 has 8 divisors (see below), whose sum is σ = 3143880960. Its totient is φ = 2347187688.

The previous prime is 2744640727. The next prime is 2744640749. The reversal of 2744640731 is 1370464472.

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 2744640731 - 2² = 2744640727 is a prime.

It is a super-2 number, since 2×2744640731² = 15066105484528428722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2744640721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443501 + ... + 449646.

It is an arithmetic number, because the mean of its divisors is an integer number (392985120).

Almost surely, 2^2744640731 is an apocalyptic number.

2744640731 is a deficient number, since it is larger than the sum of its proper divisors (399240229).

2744640731 is an equidigital number, since it uses as much as digits as its factorization.

2744640731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893593.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 2744640731 is about 52389.3188636768. The cubic root of 2744640731 is about 1400.1089593768.

The spelling of 2744640731 in words is "two billion, seven hundred forty-four million, six hundred forty thousand, seven hundred thirty-one".