10638983909 has 2 divisors, whose sum is σ = 10638983910. Its totient is φ = 10638983908.

The previous prime is 10638983879. The next prime is 10638983939. The reversal of 10638983909 is 90938983601.

It is a balanced prime because it is at equal distance from previous prime (10638983879) and next prime (10638983939).

It can be written as a sum of positive squares in only one way, i.e., 9217920100 + 1421063809 = 96010^2 + 37697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10638983909 is a prime.

It is a super-2 number, since 2×10638983909² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10638983939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5319491954 + 5319491955.

It is an arithmetic number, because the mean of its divisors is an integer number (5319491955).

Almost surely, 2^10638983909 is an apocalyptic number.

It is an amenable number.

10638983909 is a deficient number, since it is larger than the sum of its proper divisors (1).

10638983909 is an equidigital number, since it uses as much as digits as its factorization.

10638983909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 10638983909 in words is "ten billion, six hundred thirty-eight million, nine hundred eighty-three thousand, nine hundred nine".