4021686508 has 48 divisors (see below), whose sum is σ = 8171968000. Its totient is φ = 1696132224.

The previous prime is 4021686503. The next prime is 4021686517. The reversal of 4021686508 is 8056861204.

It is not an unprimeable number, because it can be changed into a prime (4021686503) 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, 1017985 + ... + 1021927.

Almost surely, 2^4021686508 is an apocalyptic number.

It is an amenable number.

4021686508 is an abundant number, since it is smaller than the sum of its proper divisors (4150281492).

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

4021686508 is a wasteful number, since it uses less digits than its factorization.

4021686508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526 (or 4524 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 4021686508 is about 63416.7683503346. The cubic root of 4021686508 is about 1590.2646485366.

The spelling of 4021686508 in words is "four billion, twenty-one million, six hundred eighty-six thousand, five hundred eight".