1649856622 has 8 divisors (see below), whose sum is σ = 2475280656. Its totient is φ = 824763072.

The previous prime is 1649856617. The next prime is 1649856623. The reversal of 1649856622 is 2266589461.

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

It is a super-3 number, since 3×1649856622³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649856623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69738 + ... + 90349.

It is an arithmetic number, because the mean of its divisors is an integer number (309410082).

Almost surely, 2^1649856622 is an apocalyptic number.

1649856622 is a deficient number, since it is larger than the sum of its proper divisors (825424034).

1649856622 is a wasteful number, since it uses less digits than its factorization.

1649856622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165242.

The product of its digits is 1244160, while the sum is 49.

The square root of 1649856622 is about 40618.4271236590. The cubic root of 1649856622 is about 1181.6315222292.

The spelling of 1649856622 in words is "one billion, six hundred forty-nine million, eight hundred fifty-six thousand, six hundred twenty-two".