15873973 has 2 divisors, whose sum is σ = 15873974. Its totient is φ = 15873972.

The previous prime is 15873931. The next prime is 15874007. The reversal of 15873973 is 37937851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11785489 + 4088484 = 3433^2 + 2022^2 .

It is a cyclic number.

It is not a de Polignac number, because 15873973 - 2²¹ = 13776821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15873173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7936986 + 7936987.

It is an arithmetic number, because the mean of its divisors is an integer number (7936987).

Almost surely, 2^15873973 is an apocalyptic number.

It is an amenable number.

15873973 is a deficient number, since it is larger than the sum of its proper divisors (1).

15873973 is an equidigital number, since it uses as much as digits as its factorization.

15873973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 15873973 is about 3984.2154811205. The cubic root of 15873973 is about 251.3208649723.

The spelling of 15873973 in words is "fifteen million, eight hundred seventy-three thousand, nine hundred seventy-three".