1933989816 has 64 divisors (see below), whose sum is σ = 5456419200. Its totient is φ = 565846400.

The previous prime is 1933989781. The next prime is 1933989821. The reversal of 1933989816 is 6189893391.

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 15 ways as a sum of consecutive naturals, for example, 118650 + ... + 133961.

It is an arithmetic number, because the mean of its divisors is an integer number (85256550).

Almost surely, 2^1933989816 is an apocalyptic number.

It is an amenable number.

1933989816 is an abundant number, since it is smaller than the sum of its proper divisors (3522429384).

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

1933989816 is a wasteful number, since it uses less digits than its factorization.

1933989816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252660 (or 252656 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 57.

The square root of 1933989816 is about 43977.1510673441. The cubic root of 1933989816 is about 1245.9044230686.

The spelling of 1933989816 in words is "one billion, nine hundred thirty-three million, nine hundred eighty-nine thousand, eight hundred sixteen".