13933471994 has 32 divisors (see below), whose sum is σ = 23029090560. Its totient is φ = 6282948672.

The previous prime is 13933471991. The next prime is 13933472041. The reversal of 13933471994 is 49917433931.

13933471994 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13933471991) 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, 308189 + ... + 350495.

It is an arithmetic number, because the mean of its divisors is an integer number (719659080).

Almost surely, 2^13933471994 is an apocalyptic number.

13933471994 is a deficient number, since it is larger than the sum of its proper divisors (9095618566).

13933471994 is a wasteful number, since it uses less digits than its factorization.

13933471994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42614.

The product of its digits is 2204496, while the sum is 53.

The spelling of 13933471994 in words is "thirteen billion, nine hundred thirty-three million, four hundred seventy-one thousand, nine hundred ninety-four".