3649042806 has 32 divisors (see below), whose sum is σ = 7414727040. Its totient is φ = 1197048576.

The previous prime is 3649042783. The next prime is 3649042807. The reversal of 3649042806 is 6082409463.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649042807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86665 + ... + 121691.

It is an arithmetic number, because the mean of its divisors is an integer number (231710220).

Almost surely, 2^3649042806 is an apocalyptic number.

3649042806 is an abundant number, since it is smaller than the sum of its proper divisors (3765684234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3649042806 is a wasteful number, since it uses less digits than its factorization.

3649042806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35308.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 3649042806 is about 60407.3075546328. The cubic root of 3649042806 is about 1539.5471212873.

The spelling of 3649042806 in words is "three billion, six hundred forty-nine million, forty-two thousand, eight hundred six".