16351393 has 4 divisors (see below), whose sum is σ = 16455700. Its totient is φ = 16247088.

The previous prime is 16351351. The next prime is 16351397. The reversal of 16351393 is 39315361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10036224 + 6315169 = 3168^2 + 2513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16351393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16351397) 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, 51918 + ... + 52231.

It is an arithmetic number, because the mean of its divisors is an integer number (4113925).

Almost surely, 2^16351393 is an apocalyptic number.

It is an amenable number.

16351393 is a deficient number, since it is larger than the sum of its proper divisors (104307).

16351393 is a wasteful number, since it uses less digits than its factorization.

16351393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104306.

The product of its digits is 7290, while the sum is 31.

The square root of 16351393 is about 4043.6855713569. The cubic root of 16351393 is about 253.8155655757.

The spelling of 16351393 in words is "sixteen million, three hundred fifty-one thousand, three hundred ninety-three".