1109813479 has 2 divisors, whose sum is σ = 1109813480. Its totient is φ = 1109813478.

The previous prime is 1109813477. The next prime is 1109813489. The reversal of 1109813479 is 9743189011.

It is a weak prime.

It is an emirp because it is prime and its reverse (9743189011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1109813479 - 2¹ = 1109813477 is a prime.

Together with 1109813477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109813473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554906739 + 554906740.

It is an arithmetic number, because the mean of its divisors is an integer number (554906740).

Almost surely, 2^1109813479 is an apocalyptic number.

1109813479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109813479 is an equidigital number, since it uses as much as digits as its factorization.

1109813479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1109813479 is about 33313.8631653551. The cubic root of 1109813479 is about 1035.3408071184.

The spelling of 1109813479 in words is "one billion, one hundred nine million, eight hundred thirteen thousand, four hundred seventy-nine".