16030993 has 4 divisors (see below), whose sum is σ = 17488368. Its totient is φ = 14573620.

The previous prime is 16030991. The next prime is 16031011. The reversal of 16030993 is 39903061.

16030993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16030993 - 2¹ = 16030991 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16030991) 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, 728671 + ... + 728692.

It is an arithmetic number, because the mean of its divisors is an integer number (4372092).

Almost surely, 2^16030993 is an apocalyptic number.

It is an amenable number.

16030993 is a deficient number, since it is larger than the sum of its proper divisors (1457375).

16030993 is a wasteful number, since it uses less digits than its factorization.

16030993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457374.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 16030993 is about 4003.8722507093. The cubic root of 16030993 is about 252.1468080911.

The spelling of 16030993 in words is "sixteen million, thirty thousand, nine hundred ninety-three".