3685778008 has 32 divisors (see below), whose sum is σ = 7541606160. Its totient is φ = 1674794880.

The previous prime is 3685778003. The next prime is 3685778017. The reversal of 3685778008 is 8008775863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685778003) 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, 378610 + ... + 388222.

Almost surely, 2^3685778008 is an apocalyptic number.

It is an amenable number.

3685778008 is an abundant number, since it is smaller than the sum of its proper divisors (3855828152).

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

3685778008 is a wasteful number, since it uses less digits than its factorization.

3685778008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13987 (or 13983 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 52.

The square root of 3685778008 is about 60710.6086940330. The cubic root of 3685778008 is about 1544.6961287296.

The spelling of 3685778008 in words is "three billion, six hundred eighty-five million, seven hundred seventy-eight thousand, eight".