1109278092149 has 4 divisors (see below), whose sum is σ = 1139258581164. Its totient is φ = 1079297603136.

The previous prime is 1109278092137. The next prime is 1109278092157. The reversal of 1109278092149 is 9412908729011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 794091289924 + 315186802225 = 891118^2 + 561415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109278092149 - 2¹⁶ = 1109278026613 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 1109278092149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109278092199) 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, 14990244452 + ... + 14990244525.

It is an arithmetic number, because the mean of its divisors is an integer number (284814645291).

Almost surely, 2^{1109278092149} is an apocalyptic number.

It is an amenable number.

1109278092149 is a deficient number, since it is larger than the sum of its proper divisors (29980489015).

1109278092149 is an equidigital number, since it uses as much as digits as its factorization.

1109278092149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29980489014.

The product of its (nonzero) digits is 653184, while the sum is 53.

The spelling of 1109278092149 in words is "one trillion, one hundred nine billion, two hundred seventy-eight million, ninety-two thousand, one hundred forty-nine".