16343973 has 12 divisors (see below), whose sum is σ = 24246508. Its totient is φ = 10601280.

The previous prime is 16343969. The next prime is 16343989. The reversal of 16343973 is 37934361.

It can be written as a sum of positive squares in 2 ways, for example, as 11819844 + 4524129 = 3438^2 + 2127^2 .

It is not a de Polignac number, because 16343973 - 2² = 16343969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16343903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24208 + ... + 24873.

Almost surely, 2^16343973 is an apocalyptic number.

It is an amenable number.

16343973 is a deficient number, since it is larger than the sum of its proper divisors (7902535).

16343973 is a wasteful number, since it uses less digits than its factorization.

16343973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49124 (or 49121 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 16343973 is about 4042.7679874066. The cubic root of 16343973 is about 253.7771672887. Note that the first 3 decimals are identical.

The spelling of 16343973 in words is "sixteen million, three hundred forty-three thousand, nine hundred seventy-three".