16159973 has 2 divisors, whose sum is σ = 16159974. Its totient is φ = 16159972.

The previous prime is 16159951. The next prime is 16159981. The reversal of 16159973 is 37995161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15665764 + 494209 = 3958^2 + 703^2 .

It is an emirp because it is prime and its reverse (37995161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16159973 - 2¹² = 16155877 is a prime.

It is a super-2 number, since 2×16159973² = 522289454721458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16159973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16159943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8079986 + 8079987.

It is an arithmetic number, because the mean of its divisors is an integer number (8079987).

Almost surely, 2^16159973 is an apocalyptic number.

It is an amenable number.

16159973 is a deficient number, since it is larger than the sum of its proper divisors (1).

16159973 is an equidigital number, since it uses as much as digits as its factorization.

16159973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 41.

The square root of 16159973 is about 4019.9468901964. The cubic root of 16159973 is about 252.8212321686.

The spelling of 16159973 in words is "sixteen million, one hundred fifty-nine thousand, nine hundred seventy-three".