1938005816 has 16 divisors (see below), whose sum is σ = 3635202240. Its totient is φ = 968618560.

The previous prime is 1938005809. The next prime is 1938005819. The reversal of 1938005816 is 6185008391.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938005819) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26021 + ... + 67476.

It is an arithmetic number, because the mean of its divisors is an integer number (227200140).

Almost surely, 2^1938005816 is an apocalyptic number.

It is an amenable number.

1938005816 is a deficient number, since it is larger than the sum of its proper divisors (1697196424).

1938005816 is a wasteful number, since it uses less digits than its factorization.

1938005816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96094 (or 96090 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 1938005816 is about 44022.7874628584. The cubic root of 1938005816 is about 1246.7662154040.

The spelling of 1938005816 in words is "one billion, nine hundred thirty-eight million, five thousand, eight hundred sixteen".