10083781 has 4 divisors (see below), whose sum is σ = 10173132. Its totient is φ = 9994432.

The previous prime is 10083779. The next prime is 10083791. The reversal of 10083781 is 18738001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18738001 = 479 ⋅39119.

It can be written as a sum of positive squares in 2 ways, for example, as 1846881 + 8236900 = 1359^2 + 2870^2 .

It is a cyclic number.

It is not a de Polignac number, because 10083781 - 2¹ = 10083779 is a prime.

It is a super-2 number, since 2×10083781² = 203365278511922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10083751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44506 + ... + 44731.

It is an arithmetic number, because the mean of its divisors is an integer number (2543283).

Almost surely, 2^10083781 is an apocalyptic number.

It is an amenable number.

10083781 is a deficient number, since it is larger than the sum of its proper divisors (89351).

10083781 is an equidigital number, since it uses as much as digits as its factorization.

10083781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89350.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 10083781 is about 3175.4969689798. The cubic root of 10083781 is about 216.0434654756.

The spelling of 10083781 in words is "ten million, eighty-three thousand, seven hundred eighty-one".