10381643 has 4 divisors (see below), whose sum is σ = 10391040. Its totient is φ = 10372248.

The previous prime is 10381607. The next prime is 10381661. The reversal of 10381643 is 34618301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10381643 - 2⁸ = 10381387 is a prime.

It is a super-2 number, since 2×10381643² = 215557022758898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10381673) 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 in 3 ways as a sum of consecutive naturals, for example, 2780 + ... + 5337.

It is an arithmetic number, because the mean of its divisors is an integer number (2597760).

Almost surely, 2^10381643 is an apocalyptic number.

10381643 is a deficient number, since it is larger than the sum of its proper divisors (9397).

10381643 is an equidigital number, since it uses as much as digits as its factorization.

10381643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9396.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 10381643 is about 3222.0557102570. The cubic root of 10381643 is about 218.1500734170.

Adding to 10381643 its reverse (34618301), we get a palindrome (44999944).

The spelling of 10381643 in words is "ten million, three hundred eighty-one thousand, six hundred forty-three".