10818949 has 2 divisors, whose sum is σ = 10818950. Its totient is φ = 10818948.

The previous prime is 10818937. The next prime is 10818979. The reversal of 10818949 is 94981801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6890625 + 3928324 = 2625^2 + 1982^2 .

It is an emirp because it is prime and its reverse (94981801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10818949 - 2⁵ = 10818917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10818979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5409474 + 5409475.

It is an arithmetic number, because the mean of its divisors is an integer number (5409475).

Almost surely, 2^10818949 is an apocalyptic number.

It is an amenable number.

10818949 is a deficient number, since it is larger than the sum of its proper divisors (1).

10818949 is an equidigital number, since it uses as much as digits as its factorization.

10818949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 10818949 is about 3289.2170800967. The cubic root of 10818949 is about 221.1710897801.

The spelling of 10818949 in words is "ten million, eight hundred eighteen thousand, nine hundred forty-nine".