3808667820 has 24 divisors (see below), whose sum is σ = 10664270064. Its totient is φ = 1015644736.

The previous prime is 3808667813. The next prime is 3808667827. The reversal of 3808667820 is 287668083.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3808667813) and next prime (3808667827).

It is a self number, because there is not a number n which added to its sum of digits gives 3808667820.

It is not an unprimeable number, because it can be changed into a prime (3808667827) 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, 31738839 + ... + 31738958.

It is an arithmetic number, because the mean of its divisors is an integer number (444344586).

Almost surely, 2^3808667820 is an apocalyptic number.

3808667820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3808667820 is an abundant number, since it is smaller than the sum of its proper divisors (6855602244).

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

3808667820 is a wasteful number, since it uses less digits than its factorization.

3808667820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63477809 (or 63477807 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 3808667820 is about 61714.4052875826. The cubic root of 3808667820 is about 1561.6763455867.

The spelling of 3808667820 in words is "three billion, eight hundred eight million, six hundred sixty-seven thousand, eight hundred twenty".