16703381 has 2 divisors, whose sum is σ = 16703382. Its totient is φ = 16703380.

The previous prime is 16703371. The next prime is 16703399. The reversal of 16703381 is 18330761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14554225 + 2149156 = 3815^2 + 1466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16703381 is a prime.

It is a super-2 number, since 2×16703381² = 558005873662322, 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 (16703311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8351690 + 8351691.

It is an arithmetic number, because the mean of its divisors is an integer number (8351691).

Almost surely, 2^16703381 is an apocalyptic number.

It is an amenable number.

16703381 is a deficient number, since it is larger than the sum of its proper divisors (1).

16703381 is an equidigital number, since it uses as much as digits as its factorization.

16703381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 16703381 is about 4086.9770001800. The cubic root of 16703381 is about 255.6239035070.

The spelling of 16703381 in words is "sixteen million, seven hundred three thousand, three hundred eighty-one".