16501873 has 2 divisors, whose sum is σ = 16501874. Its totient is φ = 16501872.

The previous prime is 16501871. The next prime is 16501897. The reversal of 16501873 is 37810561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15116544 + 1385329 = 3888^2 + 1177^2 .

It is an emirp because it is prime and its reverse (37810561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16501873 - 2¹ = 16501871 is a prime.

Together with 16501871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16501871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250936 + 8250937.

It is an arithmetic number, because the mean of its divisors is an integer number (8250937).

Almost surely, 2^16501873 is an apocalyptic number.

It is an amenable number.

16501873 is a deficient number, since it is larger than the sum of its proper divisors (1).

16501873 is an equidigital number, since it uses as much as digits as its factorization.

16501873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 16501873 is about 4062.2497461382. The cubic root of 16501873 is about 254.5918010963.

The spelling of 16501873 in words is "sixteen million, five hundred one thousand, eight hundred seventy-three".