1633668944 has 40 divisors (see below), whose sum is σ = 3413114880. Its totient is φ = 754963200.

The previous prime is 1633668931. The next prime is 1633669007. The reversal of 1633668944 is 4498663361.

It is a junction number, because it is equal to n+sod(n) for n = 1633668892 and 1633668901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53072 + ... + 77999.

It is an arithmetic number, because the mean of its divisors is an integer number (85327872).

Almost surely, 2^1633668944 is an apocalyptic number.

It is an amenable number.

1633668944 is an abundant number, since it is smaller than the sum of its proper divisors (1779445936).

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

1633668944 is a wasteful number, since it uses less digits than its factorization.

1633668944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131139 (or 131133 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 50.

The square root of 1633668944 is about 40418.6707351937. The cubic root of 1633668944 is about 1177.7542616825.

The spelling of 1633668944 in words is "one billion, six hundred thirty-three million, six hundred sixty-eight thousand, nine hundred forty-four".