3685605187 has 12 divisors (see below), whose sum is σ = 4160614528. Its totient is φ = 3259990800.

The previous prime is 3685605179. The next prime is 3685605191. The reversal of 3685605187 is 7815065863.

It is not a de Polignac number, because 3685605187 - 2³ = 3685605179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3685605187.

It is not an unprimeable number, because it can be changed into a prime (3685605887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407139 + ... + 416092.

Almost surely, 2^3685605187 is an apocalyptic number.

3685605187 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

3685605187 is a deficient number, since it is larger than the sum of its proper divisors (475009341).

3685605187 is a wasteful number, since it uses less digits than its factorization.

3685605187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823290 (or 823279 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 3685605187 is about 60709.1853593836. The cubic root of 3685605187 is about 1544.6719854686.

The spelling of 3685605187 in words is "three billion, six hundred eighty-five million, six hundred five thousand, one hundred eighty-seven".