3630694985 has 4 divisors (see below), whose sum is σ = 4356833988. Its totient is φ = 2904555984.

The previous prime is 3630694973. The next prime is 3630694993. The reversal of 3630694985 is 5894960363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5894960363 = 163 ⋅36165401.

It can be written as a sum of positive squares in 2 ways, for example, as 2242685449 + 1388009536 = 47357^2 + 37256^2 .

It is a cyclic number.

It is not a de Polignac number, because 3630694985 - 2²⁸ = 3362259529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363069494 + ... + 363069503.

It is an arithmetic number, because the mean of its divisors is an integer number (1089208497).

Almost surely, 2^3630694985 is an apocalyptic number.

It is an amenable number.

3630694985 is a deficient number, since it is larger than the sum of its proper divisors (726139003).

3630694985 is an equidigital number, since it uses as much as digits as its factorization.

3630694985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726139002.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The square root of 3630694985 is about 60255.2486095610. The cubic root of 3630694985 is about 1536.9624424319.

The spelling of 3630694985 in words is "three billion, six hundred thirty million, six hundred ninety-four thousand, nine hundred eighty-five".