1040380605 has 80 divisors (see below), whose sum is σ = 2043417024. Its totient is φ = 502225920.

The previous prime is 1040380567. The next prime is 1040380613. The reversal of 1040380605 is 5060830401.

1040380605 is a `hidden beast` number, since 10 + 40 + 3 + 8 + 0 + 605 = 666.

It is not a de Polignac number, because 1040380605 - 2¹⁸ = 1040118461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1545549 + ... + 1546221.

Almost surely, 2^1040380605 is an apocalyptic number.

1040380605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1040380605 is a deficient number, since it is larger than the sum of its proper divisors (1003036419).

1040380605 is a wasteful number, since it uses less digits than its factorization.

1040380605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1040380605 is about 32254.9314834182. The cubic root of 1040380605 is about 1013.2829828278.

The spelling of 1040380605 in words is "one billion, forty million, three hundred eighty thousand, six hundred five".