1117943145 has 48 divisors (see below), whose sum is σ = 2117187072. Its totient is φ = 541198080.

The previous prime is 1117943117. The next prime is 1117943159. The reversal of 1117943145 is 5413497111.

1117943145 is a `hidden beast` number, since 11 + 179 + 431 + 45 = 666.

It is not a de Polignac number, because 1117943145 - 2¹² = 1117939049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 425877 + ... + 428493.

It is an arithmetic number, because the mean of its divisors is an integer number (44108064).

Almost surely, 2^1117943145 is an apocalyptic number.

1117943145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1117943145 is a deficient number, since it is larger than the sum of its proper divisors (999243927).

1117943145 is a wasteful number, since it uses less digits than its factorization.

1117943145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502 (or 3499 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 1117943145 is about 33435.6567903189. The cubic root of 1117943145 is about 1037.8627041725.

The spelling of 1117943145 in words is "one billion, one hundred seventeen million, nine hundred forty-three thousand, one hundred forty-five".