3685994000 has 80 divisors (see below), whose sum is σ = 9598396080. Its totient is φ = 1360972800.

The previous prime is 3685993981. The next prime is 3685994003. The reversal of 3685994000 is 4995863.

It can be written as a sum of positive squares in 8 ways, for example, as 1446433024 + 2239560976 = 38032^2 + 47324^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (3685994003) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44885 + ... + 96884.

It is an arithmetic number, because the mean of its divisors is an integer number (119979951).

Almost surely, 2^3685994000 is an apocalyptic number.

It is an amenable number.

3685994000 is an abundant number, since it is smaller than the sum of its proper divisors (5912402080).

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

3685994000 is a wasteful number, since it uses less digits than its factorization.

3685994000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141805 (or 141789 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 3685994000 is about 60712.3875333527. The cubic root of 3685994000 is about 1544.7263019602.

The spelling of 3685994000 in words is "three billion, six hundred eighty-five million, nine hundred ninety-four thousand".