16167961 has 2 divisors, whose sum is σ = 16167962. Its totient is φ = 16167960.

The previous prime is 16167941. The next prime is 16168067. The reversal of 16167961 is 16976161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15960025 + 207936 = 3995^2 + 456^2 .

It is an emirp because it is prime and its reverse (16976161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16167961 - 2⁹ = 16167449 is a prime.

It is a super-2 number, since 2×16167961² = 522805925795042, 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 16167961.

It is not a weakly prime, because it can be changed into another prime (16167941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8083980 + 8083981.

It is an arithmetic number, because the mean of its divisors is an integer number (8083981).

Almost surely, 2^16167961 is an apocalyptic number.

It is an amenable number.

16167961 is a deficient number, since it is larger than the sum of its proper divisors (1).

16167961 is an equidigital number, since it uses as much as digits as its factorization.

16167961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 37.

The square root of 16167961 is about 4020.9403129119. The cubic root of 16167961 is about 252.8628824720.

The spelling of 16167961 in words is "sixteen million, one hundred sixty-seven thousand, nine hundred sixty-one".