1663722744 has 64 divisors (see below), whose sum is σ = 4226476800. Its totient is φ = 545688576.

The previous prime is 1663722743. The next prime is 1663722751. The reversal of 1663722744 is 4472273661.

It is a junction number, because it is equal to n+sod(n) for n = 1663722696 and 1663722705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663722743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400872 + ... + 405000.

It is an arithmetic number, because the mean of its divisors is an integer number (66038700).

Almost surely, 2^1663722744 is an apocalyptic number.

It is an amenable number.

1663722744 is an abundant number, since it is smaller than the sum of its proper divisors (2562754056).

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

1663722744 is a wasteful number, since it uses less digits than its factorization.

1663722744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404 (or 4400 counting only the distinct ones).

The product of its digits is 338688, while the sum is 42.

The square root of 1663722744 is about 40788.7575687223. The cubic root of 1663722744 is about 1184.9326088186.

The spelling of 1663722744 in words is "one billion, six hundred sixty-three million, seven hundred twenty-two thousand, seven hundred forty-four".