6649883842 has 32 divisors (see below), whose sum is σ = 11818220544. Its totient is φ = 2746137600.

The previous prime is 6649883819. The next prime is 6649883887. The reversal of 6649883842 is 2483889466.

It is a super-2 number, since 2×6649883842² = 88441910224185361928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68242 + ... + 134002.

It is an arithmetic number, because the mean of its divisors is an integer number (369319392).

Almost surely, 2^6649883842 is an apocalyptic number.

6649883842 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6649883842 is a deficient number, since it is larger than the sum of its proper divisors (5168336702).

6649883842 is a wasteful number, since it uses less digits than its factorization.

6649883842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66034.

The product of its digits is 15925248, while the sum is 58.

The square root of 6649883842 is about 81546.8199379964. The cubic root of 6649883842 is about 1880.4914063616.

The spelling of 6649883842 in words is "six billion, six hundred forty-nine million, eight hundred eighty-three thousand, eight hundred forty-two".