10165381 has 2 divisors, whose sum is σ = 10165382. Its totient is φ = 10165380.

The previous prime is 10165373. The next prime is 10165391. The reversal of 10165381 is 18356101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6421156 + 3744225 = 2534^2 + 1935^2 .

It is a cyclic number.

It is not a de Polignac number, because 10165381 - 2³ = 10165373 is a prime.

It is a super-2 number, since 2×10165381² = 206669941750322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10165391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5082690 + 5082691.

It is an arithmetic number, because the mean of its divisors is an integer number (5082691).

Almost surely, 2^10165381 is an apocalyptic number.

It is an amenable number.

10165381 is a deficient number, since it is larger than the sum of its proper divisors (1).

10165381 is an equidigital number, since it uses as much as digits as its factorization.

10165381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 10165381 is about 3188.3194632910. The cubic root of 10165381 is about 216.6246564178.

Adding to 10165381 its product of nonzero digits (720), we get a palindrome (10166101).

The spelling of 10165381 in words is "ten million, one hundred sixty-five thousand, three hundred eighty-one".