1040117805 has 24 divisors (see below), whose sum is σ = 1805027328. Its totient is φ = 554066016.

The previous prime is 1040117803. The next prime is 1040117809. The reversal of 1040117805 is 5087110401.

It is not a de Polignac number, because 1040117805 - 2¹ = 1040117803 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040117801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25444 + ... + 52226.

It is an arithmetic number, because the mean of its divisors is an integer number (75209472).

Almost surely, 2^1040117805 is an apocalyptic number.

1040117805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1040117805 is a deficient number, since it is larger than the sum of its proper divisors (764909523).

1040117805 is a wasteful number, since it uses less digits than its factorization.

1040117805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27657 (or 27654 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1040117805 is about 32250.8574304622. The cubic root of 1040117805 is about 1013.1976572616.

The spelling of 1040117805 in words is "one billion, forty million, one hundred seventeen thousand, eight hundred five".