16390918 has 8 divisors (see below), whose sum is σ = 24932880. Its totient is φ = 8079960.

The previous prime is 16390903. The next prime is 16390919. The reversal of 16390918 is 81909361.

16390918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390919) 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, 57573 + ... + 57856.

It is an arithmetic number, because the mean of its divisors is an integer number (3116610).

Almost surely, 2^16390918 is an apocalyptic number.

16390918 is a deficient number, since it is larger than the sum of its proper divisors (8541962).

16390918 is a wasteful number, since it uses less digits than its factorization.

16390918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115502.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 16390918 is about 4048.5698709544. The cubic root of 16390918 is about 254.0199108123.

The spelling of 16390918 in words is "sixteen million, three hundred ninety thousand, nine hundred eighteen".