1993786316 has 12 divisors (see below), whose sum is σ = 3694368888. Its totient is φ = 938252352.

The previous prime is 1993786313. The next prime is 1993786321. The reversal of 1993786316 is 6136873991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1993786313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14660126 + ... + 14660261.

It is an arithmetic number, because the mean of its divisors is an integer number (307864074).

Almost surely, 2^1993786316 is an apocalyptic number.

It is an amenable number.

1993786316 is a deficient number, since it is larger than the sum of its proper divisors (1700582572).

1993786316 is a wasteful number, since it uses less digits than its factorization.

1993786316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29320408 (or 29320406 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 53.

The square root of 1993786316 is about 44651.8344080061. The cubic root of 1993786316 is about 1258.6149044188.

The spelling of 1993786316 in words is "one billion, nine hundred ninety-three million, seven hundred eighty-six thousand, three hundred sixteen".