1649381522 has 8 divisors (see below), whose sum is σ = 2475639936. Its totient is φ = 824168212.

The previous prime is 1649381519. The next prime is 1649381527. The reversal of 1649381522 is 2251839461.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1649381522.

It is not an unprimeable number, because it can be changed into a prime (1649381527) 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 3 ways as a sum of consecutive naturals, for example, 257318 + ... + 263649.

It is an arithmetic number, because the mean of its divisors is an integer number (309454992).

Almost surely, 2^1649381522 is an apocalyptic number.

1649381522 is a deficient number, since it is larger than the sum of its proper divisors (826258414).

1649381522 is a wasteful number, since it uses less digits than its factorization.

1649381522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522552.

The product of its digits is 103680, while the sum is 41.

The square root of 1649381522 is about 40612.5783717311. The cubic root of 1649381522 is about 1181.5180887295.

The spelling of 1649381522 in words is "one billion, six hundred forty-nine million, three hundred eighty-one thousand, five hundred twenty-two".