1108681493 has 4 divisors (see below), whose sum is σ = 1109523360. Its totient is φ = 1107839628.

The previous prime is 1108681447. The next prime is 1108681517. The reversal of 1108681493 is 3941868011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1108681493 - 2⁸ = 1108681237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1108681493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1108681403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418955 + ... + 421592.

It is an arithmetic number, because the mean of its divisors is an integer number (277380840).

Almost surely, 2^1108681493 is an apocalyptic number.

It is an amenable number.

1108681493 is a deficient number, since it is larger than the sum of its proper divisors (841867).

1108681493 is an equidigital number, since it uses as much as digits as its factorization.

1108681493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841866.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 1108681493 is about 33296.8691170807. The cubic root of 1108681493 is about 1034.9886788807.

The spelling of 1108681493 in words is "one billion, one hundred eight million, six hundred eighty-one thousand, four hundred ninety-three".