16161797 has 2 divisors, whose sum is σ = 16161798. Its totient is φ = 16161796.

The previous prime is 16161793. The next prime is 16161809. The reversal of 16161797 is 79716161.

16161797 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., 9740641 + 6421156 = 3121^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 16161797 - 2² = 16161793 is a prime.

It is a super-2 number, since 2×16161797² = 522407364538418, 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 16161797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16161793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080898 + 8080899.

It is an arithmetic number, because the mean of its divisors is an integer number (8080899).

Almost surely, 2^16161797 is an apocalyptic number.

It is an amenable number.

16161797 is a deficient number, since it is larger than the sum of its proper divisors (1).

16161797 is an equidigital number, since it uses as much as digits as its factorization.

16161797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 38.

The square root of 16161797 is about 4020.1737524639. The cubic root of 16161797 is about 252.8307439126.

The spelling of 16161797 in words is "sixteen million, one hundred sixty-one thousand, seven hundred ninety-seven".