3628438686 has 32 divisors (see below), whose sum is σ = 8153805600. Its totient is φ = 1195888320.

The previous prime is 3628438663. The next prime is 3628438687. The reversal of 3628438686 is 6868348263.

It is a happy number.

3628438686 is a `hidden beast` number, since 3 + 628 + 4 + 3 + 8 + 6 + 8 + 6 = 666.

It is a super-2 number, since 2×3628438686² = 26331134596122813192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3628438687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372685 + ... + 382296.

It is an arithmetic number, because the mean of its divisors is an integer number (254806425).

Almost surely, 2^3628438686 is an apocalyptic number.

3628438686 is an abundant number, since it is smaller than the sum of its proper divisors (4525366914).

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

3628438686 is a wasteful number, since it uses less digits than its factorization.

3628438686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755081 (or 755075 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 54.

The square root of 3628438686 is about 60236.5228578144. The cubic root of 3628438686 is about 1536.6439941779.

The spelling of 3628438686 in words is "three billion, six hundred twenty-eight million, four hundred thirty-eight thousand, six hundred eighty-six".