1649044814440 has 32 divisors (see below), whose sum is σ = 3712377404160. Its totient is φ = 659257646400.

The previous prime is 1649044814423. The next prime is 1649044814491. The reversal of 1649044814440 is 444184409461.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11184576 + ... + 11331055.

It is an arithmetic number, because the mean of its divisors is an integer number (116011793880).

Almost surely, 2^{1649044814440} is an apocalyptic number.

1649044814440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1649044814440 is an abundant number, since it is smaller than the sum of its proper divisors (2063332589720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1649044814440 is a wasteful number, since it uses less digits than its factorization.

1649044814440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22517473 (or 22517469 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 1649044814440 in words is "one trillion, six hundred forty-nine billion, forty-four million, eight hundred fourteen thousand, four hundred forty".