3645251212 has 12 divisors (see below), whose sum is σ = 6527543176. Its totient is φ = 1780238880.

The previous prime is 3645251191. The next prime is 3645251243. The reversal of 3645251212 is 2121525463.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10596489 + ... + 10596832.

Almost surely, 2^3645251212 is an apocalyptic number.

It is an amenable number.

3645251212 is a deficient number, since it is larger than the sum of its proper divisors (2882291964).

3645251212 is a wasteful number, since it uses less digits than its factorization.

3645251212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21193368 (or 21193366 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 3645251212 is about 60375.9158274224. The cubic root of 3645251212 is about 1539.0137064625.

Adding to 3645251212 its reverse (2121525463), we get a palindrome (5766776675).

It can be divided in two parts, 3645251 and 212, that added together give a palindrome (3645463).

The spelling of 3645251212 in words is "three billion, six hundred forty-five million, two hundred fifty-one thousand, two hundred twelve".