3641036985 has 24 divisors (see below), whose sum is σ = 6481704840. Its totient is φ = 1889402112.

The previous prime is 3641036941. The next prime is 3641036989. The reversal of 3641036985 is 5896301463.

It can be written as a sum of positive squares in 4 ways, for example, as 363245481 + 3277791504 = 19059^2 + 57252^2 .

It is not a de Polignac number, because 3641036985 - 2⁶ = 3641036921 is a prime.

It is a super-2 number, since 2×3641036985² = 26514300652275780450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3641036985.

It is not an unprimeable number, because it can be changed into a prime (3641036989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1091740 + ... + 1095069.

It is an arithmetic number, because the mean of its divisors is an integer number (270071035).

Almost surely, 2^3641036985 is an apocalyptic number.

It is an amenable number.

3641036985 is a deficient number, since it is larger than the sum of its proper divisors (2840667855).

3641036985 is a wasteful number, since it uses less digits than its factorization.

3641036985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186857 (or 2186854 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 3641036985 is about 60341.0058335126. The cubic root of 3641036985 is about 1538.4203999285.

The spelling of 3641036985 in words is "three billion, six hundred forty-one million, thirty-six thousand, nine hundred eighty-five".