3687844906 has 16 divisors (see below), whose sum is σ = 5577055560. Its totient is φ = 1828869120.

The previous prime is 3687844813. The next prime is 3687844907. The reversal of 3687844906 is 6094487863.

It can be written as a sum of positive squares in 4 ways, for example, as 1524199681 + 2163645225 = 39041^2 + 46515^2 .

It is not an unprimeable number, because it can be changed into a prime (3687844907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168346 + ... + 188986.

Almost surely, 2^3687844906 is an apocalyptic number.

3687844906 is a deficient number, since it is larger than the sum of its proper divisors (1889210654).

3687844906 is a wasteful number, since it uses less digits than its factorization.

3687844906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21369.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The square root of 3687844906 is about 60727.6288521131. The cubic root of 3687844906 is about 1544.9848179123.

The spelling of 3687844906 in words is "three billion, six hundred eighty-seven million, eight hundred forty-four thousand, nine hundred six".