109074781 has 4 divisors (see below), whose sum is σ = 109111072. Its totient is φ = 109038492.

The previous prime is 109074773. The next prime is 109074787. The reversal of 109074781 is 187470901.

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 109074781 - 2³ = 109074773 is a prime.

It is a super-2 number, since 2×109074781² = 23794615700395922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 109074781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109074787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13185 + ... + 19798.

It is an arithmetic number, because the mean of its divisors is an integer number (27277768).

Almost surely, 2^109074781 is an apocalyptic number.

It is an amenable number.

109074781 is a deficient number, since it is larger than the sum of its proper divisors (36291).

109074781 is an equidigital number, since it uses as much as digits as its factorization.

109074781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36290.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 109074781 is about 10443.8872552321. The cubic root of 109074781 is about 477.7948341346.

The spelling of 109074781 in words is "one hundred nine million, seventy-four thousand, seven hundred eighty-one".