3705665818 has 4 divisors (see below), whose sum is σ = 5558498730. Its totient is φ = 1852832908.

The previous prime is 3705665809. The next prime is 3705665827. The reversal of 3705665818 is 8185665073.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3705665809) and next prime (3705665827).

It can be written as a sum of positive squares in only one way, i.e., 2979740569 + 725925249 = 54587^2 + 26943^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 926416453 + ... + 926416456.

Almost surely, 2^3705665818 is an apocalyptic number.

3705665818 is a deficient number, since it is larger than the sum of its proper divisors (1852832912).

3705665818 is a wasteful number, since it uses less digits than its factorization.

3705665818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852832911.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 3705665818 is about 60874.1802244597. The cubic root of 3705665818 is about 1547.4694494714.

The spelling of 3705665818 in words is "three billion, seven hundred five million, six hundred sixty-five thousand, eight hundred eighteen".