2318081649 has 8 divisors (see below), whose sum is σ = 3328527552. Its totient is φ = 1426511760.

The previous prime is 2318081599. The next prime is 2318081671. The reversal of 2318081649 is 9461808132.

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

It is not a de Polignac number, because 2318081649 - 2⁹ = 2318081137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2318081649.

It is not an unprimeable number, because it can be changed into a prime (2318081449) 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, 29718957 + ... + 29719034.

It is an arithmetic number, because the mean of its divisors is an integer number (416065944).

Almost surely, 2^2318081649 is an apocalyptic number.

It is an amenable number.

2318081649 is a deficient number, since it is larger than the sum of its proper divisors (1010445903).

2318081649 is a wasteful number, since it uses less digits than its factorization.

2318081649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59438007.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 2318081649 is about 48146.4603994935. The cubic root of 2318081649 is about 1323.4562105838.

The spelling of 2318081649 in words is "two billion, three hundred eighteen million, eighty-one thousand, six hundred forty-nine".