10181812 has 6 divisors (see below), whose sum is σ = 17818178. Its totient is φ = 5090904.

The previous prime is 10181803. The next prime is 10181837. The reversal of 10181812 is 21818101.

It can be written as a sum of positive squares in only one way, i.e., 9400356 + 781456 = 3066^2 + 884^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1272723 + ... + 1272730.

Almost surely, 2^10181812 is an apocalyptic number.

It is an amenable number.

10181812 is a deficient number, since it is larger than the sum of its proper divisors (7636366).

10181812 is a wasteful number, since it uses less digits than its factorization.

10181812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545457 (or 2545455 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 22.

The square root of 10181812 is about 3190.8951722048. The cubic root of 10181812 is about 216.7413086680.

Adding to 10181812 its reverse (21818101), we get a palindrome (31999913).

The spelling of 10181812 in words is "ten million, one hundred eighty-one thousand, eight hundred twelve".