1113247919 has 4 divisors (see below), whose sum is σ = 1272283344. Its totient is φ = 954212496.

The previous prime is 1113247901. The next prime is 1113247937. The reversal of 1113247919 is 9197423111.

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

It is an interprime number because it is at equal distance from previous prime (1113247901) and next prime (1113247937).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113247919 is a prime.

It is a super-2 number, since 2×1113247919² = 2478641858315661122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113247019) 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, 79517702 + ... + 79517715.

It is an arithmetic number, because the mean of its divisors is an integer number (318070836).

Almost surely, 2^1113247919 is an apocalyptic number.

1113247919 is a deficient number, since it is larger than the sum of its proper divisors (159035425).

1113247919 is an equidigital number, since it uses as much as digits as its factorization.

1113247919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159035424.

The product of its digits is 13608, while the sum is 38.

The square root of 1113247919 is about 33365.3700563923. The cubic root of 1113247919 is about 1036.4076993747.

The spelling of 1113247919 in words is "one billion, one hundred thirteen million, two hundred forty-seven thousand, nine hundred nineteen".