2649540659 has 8 divisors (see below), whose sum is σ = 2814983760. Its totient is φ = 2489036256.

The previous prime is 2649540653. The next prime is 2649540679. The reversal of 2649540659 is 9560459462.

It is a happy number.

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 2649540659 - 2⁸ = 2649540403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2649540653) 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 7 ways as a sum of consecutive naturals, for example, 1233569 + ... + 1235714.

It is an arithmetic number, because the mean of its divisors is an integer number (351872970).

Almost surely, 2^2649540659 is an apocalyptic number.

2649540659 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2649540659 is a deficient number, since it is larger than the sum of its proper divisors (165443101).

2649540659 is a wasteful number, since it uses less digits than its factorization.

2649540659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469349.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The square root of 2649540659 is about 51473.6889973897. The cubic root of 2649540659 is about 1383.7475432118.

The spelling of 2649540659 in words is "two billion, six hundred forty-nine million, five hundred forty thousand, six hundred fifty-nine".