16097881 has 2 divisors, whose sum is σ = 16097882. Its totient is φ = 16097880.

The previous prime is 16097869. The next prime is 16097891. The reversal of 16097881 is 18879061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15872256 + 225625 = 3984^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 16097881 - 2¹⁵ = 16065113 is a prime.

It is a super-2 number, since 2×16097881² = 518283545380322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16097821) 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, 8048940 + 8048941.

It is an arithmetic number, because the mean of its divisors is an integer number (8048941).

Almost surely, 2^16097881 is an apocalyptic number.

It is an amenable number.

16097881 is a deficient number, since it is larger than the sum of its proper divisors (1).

16097881 is an equidigital number, since it uses as much as digits as its factorization.

16097881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16097881 is about 4012.2164697334. The cubic root of 16097881 is about 252.4970087546.

The spelling of 16097881 in words is "sixteen million, ninety-seven thousand, eight hundred eighty-one".