16874381 has 2 divisors, whose sum is σ = 16874382. Its totient is φ = 16874380.

The previous prime is 16874359. The next prime is 16874423. The reversal of 16874381 is 18347861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11162281 + 5712100 = 3341^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 16874381 - 2²² = 12680077 is a prime.

It is a super-2 number, since 2×16874381² = 569489468266322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16874281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8437190 + 8437191.

It is an arithmetic number, because the mean of its divisors is an integer number (8437191).

Almost surely, 2^16874381 is an apocalyptic number.

It is an amenable number.

16874381 is a deficient number, since it is larger than the sum of its proper divisors (1).

16874381 is an equidigital number, since it uses as much as digits as its factorization.

16874381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 16874381 is about 4107.8438383171. The cubic root of 16874381 is about 256.4932557406.

The spelling of 16874381 in words is "sixteen million, eight hundred seventy-four thousand, three hundred eighty-one".