1705842945 has 24 divisors (see below), whose sum is σ = 2960111232. Its totient is φ = 908762400.

The previous prime is 1705842911. The next prime is 1705842953. The reversal of 1705842945 is 5492485071.

1705842945 is a `hidden beast` number, since 1 + 7 + 0 + 584 + 29 + 45 = 666.

It is not a de Polignac number, because 1705842945 - 2²¹ = 1703745793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1705842945.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 20190 + ... + 61800.

It is an arithmetic number, because the mean of its divisors is an integer number (123337968).

Almost surely, 2^1705842945 is an apocalyptic number.

1705842945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1705842945 is a deficient number, since it is larger than the sum of its proper divisors (1254268287).

1705842945 is a wasteful number, since it uses less digits than its factorization.

1705842945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42533 (or 42530 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 1705842945 is about 41301.8515928766. The cubic root of 1705842945 is about 1194.8489728197.

The spelling of 1705842945 in words is "one billion, seven hundred five million, eight hundred forty-two thousand, nine hundred forty-five".