108761993 has 2 divisors, whose sum is σ = 108761994. Its totient is φ = 108761992.

The previous prime is 108761881. The next prime is 108762013. The reversal of 108761993 is 399167801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65885689 + 42876304 = 8117^2 + 6548^2 .

It is a cyclic number.

It is not a de Polignac number, because 108761993 - 2¹⁶ = 108696457 is a prime.

It is a super-2 number, since 2×108761993² = 23658342242664098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (108761693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54380996 + 54380997.

It is an arithmetic number, because the mean of its divisors is an integer number (54380997).

Almost surely, 2^108761993 is an apocalyptic number.

It is an amenable number.

108761993 is a deficient number, since it is larger than the sum of its proper divisors (1).

108761993 is an equidigital number, since it uses as much as digits as its factorization.

108761993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 108761993 is about 10428.9018117921. The cubic root of 108761993 is about 477.3376811844.

The spelling of 108761993 in words is "one hundred eight million, seven hundred sixty-one thousand, nine hundred ninety-three".