108384781 has 2 divisors, whose sum is σ = 108384782. Its totient is φ = 108384780.

The previous prime is 108384769. The next prime is 108384799. The reversal of 108384781 is 187483801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71064900 + 37319881 = 8430^2 + 6109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108384781 is a prime.

It is a super-2 number, since 2×108384781² = 23494521504835922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108381781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54192390 + 54192391.

It is an arithmetic number, because the mean of its divisors is an integer number (54192391).

Almost surely, 2^108384781 is an apocalyptic number.

It is an amenable number.

108384781 is a deficient number, since it is larger than the sum of its proper divisors (1).

108384781 is an equidigital number, since it uses as much as digits as its factorization.

108384781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 108384781 is about 10410.8011699388. The cubic root of 108384781 is about 476.7852024525.

The spelling of 108384781 in words is "one hundred eight million, three hundred eighty-four thousand, seven hundred eighty-one".