16173973 has 2 divisors, whose sum is σ = 16173974. Its totient is φ = 16173972.

The previous prime is 16173929. The next prime is 16174003. The reversal of 16173973 is 37937161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13490929 + 2683044 = 3673^2 + 1638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16173973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16173923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8086986 + 8086987.

It is an arithmetic number, because the mean of its divisors is an integer number (8086987).

Almost surely, 2^16173973 is an apocalyptic number.

It is an amenable number.

16173973 is a deficient number, since it is larger than the sum of its proper divisors (1).

16173973 is an equidigital number, since it uses as much as digits as its factorization.

16173973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 37.

The square root of 16173973 is about 4021.6878297551. The cubic root of 16173973 is about 252.8942206488.

The spelling of 16173973 in words is "sixteen million, one hundred seventy-three thousand, nine hundred seventy-three".