3778987860 has 72 divisors (see below), whose sum is σ = 11961331200. Its totient is φ = 963914688.

The previous prime is 3778987853. The next prime is 3778987871. The reversal of 3778987860 is 687898773.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452260 + ... + 460539.

It is an arithmetic number, because the mean of its divisors is an integer number (166129600).

Almost surely, 2^3778987860 is an apocalyptic number.

3778987860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3778987860 is an abundant number, since it is smaller than the sum of its proper divisors (8182343340).

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

3778987860 is a wasteful number, since it uses less digits than its factorization.

3778987860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912837 (or 912832 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The square root of 3778987860 is about 61473.4728155161. The cubic root of 3778987860 is about 1557.6091829329.

The spelling of 3778987860 in words is "three billion, seven hundred seventy-eight million, nine hundred eighty-seven thousand, eight hundred sixty".