1117623145 has 4 divisors (see below), whose sum is σ = 1341147780. Its totient is φ = 894098512.

The previous prime is 1117623139. The next prime is 1117623161. The reversal of 1117623145 is 5413267111.

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 515607849 + 602015296 = 22707^2 + 24536^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117623145 - 2¹⁷ = 1117492073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111762310 + ... + 111762319.

It is an arithmetic number, because the mean of its divisors is an integer number (335286945).

Almost surely, 2^1117623145 is an apocalyptic number.

It is an amenable number.

1117623145 is a deficient number, since it is larger than the sum of its proper divisors (223524635).

1117623145 is an equidigital number, since it uses as much as digits as its factorization.

1117623145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223524634.

The product of its digits is 5040, while the sum is 31.

The square root of 1117623145 is about 33430.8711373186. The cubic root of 1117623145 is about 1037.7636687966.

The spelling of 1117623145 in words is "one billion, one hundred seventeen million, six hundred twenty-three thousand, one hundred forty-five".