1117818045 has 12 divisors (see below), whose sum is σ = 1937551356. Its totient is φ = 596169600.

The previous prime is 1117818043. The next prime is 1117818047. The reversal of 1117818045 is 5408187111.

It is an interprime number because it is at equal distance from previous prime (1117818043) and next prime (1117818047).

It can be written as a sum of positive squares in 2 ways, for example, as 463583961 + 654234084 = 21531^2 + 25578^2 .

It is not a de Polignac number, because 1117818045 - 2¹ = 1117818043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117818041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12420156 + ... + 12420245.

It is an arithmetic number, because the mean of its divisors is an integer number (161462613).

Almost surely, 2^1117818045 is an apocalyptic number.

1117818045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1117818045 is a deficient number, since it is larger than the sum of its proper divisors (819733311).

1117818045 is a wasteful number, since it uses less digits than its factorization.

1117818045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24840412 (or 24840409 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 36.

The square root of 1117818045 is about 33433.7859806514. The cubic root of 1117818045 is about 1037.8239897804.

The spelling of 1117818045 in words is "one billion, one hundred seventeen million, eight hundred eighteen thousand, forty-five".