16123997 has 2 divisors, whose sum is σ = 16123998. Its totient is φ = 16123996.

The previous prime is 16123993. The next prime is 16124063. The reversal of 16123997 is 79932161.

It is a happy number.

16123997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13388281 + 2735716 = 3659^2 + 1654^2 .

It is an emirp because it is prime and its reverse (79932161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16123997 - 2² = 16123993 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16123997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16123993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8061998 + 8061999.

It is an arithmetic number, because the mean of its divisors is an integer number (8061999).

Almost surely, 2^16123997 is an apocalyptic number.

It is an amenable number.

16123997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16123997 is an equidigital number, since it uses as much as digits as its factorization.

16123997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 16123997 is about 4015.4697110052. The cubic root of 16123997 is about 252.6334790785.

The spelling of 16123997 in words is "sixteen million, one hundred twenty-three thousand, nine hundred ninety-seven".