3685180986 has 96 divisors (see below), whose sum is σ = 8725716480. Its totient is φ = 1119744000.

The previous prime is 3685180949. The next prime is 3685180987. The reversal of 3685180986 is 6890815863.

3685180986 is a `hidden beast` number, since 36 + 8 + 518 + 0 + 98 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (3685180987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2045286 + ... + 2047086.

It is an arithmetic number, because the mean of its divisors is an integer number (90892880).

Almost surely, 2^3685180986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3685180986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4362858240).

3685180986 is an abundant number, since it is smaller than the sum of its proper divisors (5040535494).

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

3685180986 is a wasteful number, since it uses less digits than its factorization.

3685180986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 3685180986 is about 60705.6915453568. The cubic root of 3685180986 is about 1544.6127209780.

The spelling of 3685180986 in words is "three billion, six hundred eighty-five million, one hundred eighty thousand, nine hundred eighty-six".