3646251236 has 24 divisors (see below), whose sum is σ = 6412665336. Its totient is φ = 1814077440.

The previous prime is 3646251233. The next prime is 3646251269. The reversal of 3646251236 is 6321526463.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1347624100 + 2298627136 = 36710^2 + 47944^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3646251236.

It is not an unprimeable number, because it can be changed into a prime (3646251233) 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, 1640606 + ... + 1642826.

It is an arithmetic number, because the mean of its divisors is an integer number (267194389).

Almost surely, 2^3646251236 is an apocalyptic number.

It is an amenable number.

3646251236 is a deficient number, since it is larger than the sum of its proper divisors (2766414100).

3646251236 is a wasteful number, since it uses less digits than its factorization.

3646251236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079 (or 4077 counting only the distinct ones).

The product of its digits is 155520, while the sum is 38.

The square root of 3646251236 is about 60384.1969061442. The cubic root of 3646251236 is about 1539.1544292674.

Adding to 3646251236 its reverse (6321526463), we get a palindrome (9967777699).

The spelling of 3646251236 in words is "three billion, six hundred forty-six million, two hundred fifty-one thousand, two hundred thirty-six".