1649088818 has 48 divisors (see below), whose sum is σ = 2737094400. Its totient is φ = 744681600.

The previous prime is 1649088817. The next prime is 1649088851. The reversal of 1649088818 is 8188809461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1649088818.

It is not an unprimeable number, because it can be changed into a prime (1649088811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4031798 + ... + 4032206.

It is an arithmetic number, because the mean of its divisors is an integer number (57022800).

Almost surely, 2^1649088818 is an apocalyptic number.

1649088818 is a deficient number, since it is larger than the sum of its proper divisors (1088005582).

1649088818 is a wasteful number, since it uses less digits than its factorization.

1649088818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 53.

The square root of 1649088818 is about 40608.9745992188. The cubic root of 1649088818 is about 1181.4481927259.

The spelling of 1649088818 in words is "one billion, six hundred forty-nine million, eighty-eight thousand, eight hundred eighteen".