1649765822 has 8 divisors (see below), whose sum is σ = 2477210736. Its totient is φ = 824028912.

The previous prime is 1649765813. The next prime is 1649765837. The reversal of 1649765822 is 2285679461.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424583 + ... + 428450.

It is an arithmetic number, because the mean of its divisors is an integer number (309651342).

Almost surely, 2^1649765822 is an apocalyptic number.

1649765822 is a deficient number, since it is larger than the sum of its proper divisors (827444914).

1649765822 is an equidigital number, since it uses as much as digits as its factorization.

1649765822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854002.

The product of its digits is 1451520, while the sum is 50.

The square root of 1649765822 is about 40617.3093889785. The cubic root of 1649765822 is about 1181.6098447676.

The spelling of 1649765822 in words is "one billion, six hundred forty-nine million, seven hundred sixty-five thousand, eight hundred twenty-two".