3645551250 has 240 divisors, whose sum is σ = 10921379040. Its totient is φ = 871200000.

The previous prime is 3645551249. The next prime is 3645551257. The reversal of 3645551250 is 521555463.

3645551250 is a `hidden beast` number, since 3 + 645 + 5 + 5 + 1 + 2 + 5 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3645551257) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 11013585 + ... + 11013915.

It is an arithmetic number, because the mean of its divisors is an integer number (45505746).

Almost surely, 2^3645551250 is an apocalyptic number.

3645551250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3645551250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5460689520).

3645551250 is an abundant number, since it is smaller than the sum of its proper divisors (7275827790).

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

3645551250 is a wasteful number, since it uses less digits than its factorization.

3645551250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 3645551250 is about 60378.4005253534. The cubic root of 3645551250 is about 1539.0559303403.

The spelling of 3645551250 in words is "three billion, six hundred forty-five million, five hundred fifty-one thousand, two hundred fifty".