16970281 has 2 divisors, whose sum is σ = 16970282. Its totient is φ = 16970280.

The previous prime is 16970273. The next prime is 16970311. The reversal of 16970281 is 18207961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15280281 + 1690000 = 3909^2 + 1300^2 .

It is an emirp because it is prime and its reverse (18207961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16970281 - 2³ = 16970273 is a prime.

It is a super-2 number, since 2×16970281² = 575980874437922, which contains 22 as substring.

It is the 4120-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (16970221) by changing a digit.

It is a nontrivial repunit in base 4119.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8485140 + 8485141.

It is an arithmetic number, because the mean of its divisors is an integer number (8485141).

Almost surely, 2^16970281 is an apocalyptic number.

It is an amenable number.

16970281 is a deficient number, since it is larger than the sum of its proper divisors (1).

16970281 is an equidigital number, since it uses as much as digits as its factorization.

16970281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 16970281 is about 4119.5000910305. The cubic root of 16970281 is about 256.9782365356.

The spelling of 16970281 in words is "sixteen million, nine hundred seventy thousand, two hundred eighty-one".