3644563450 has 48 divisors (see below), whose sum is σ = 7453522944. Its totient is φ = 1314835200.

The previous prime is 3644563397. The next prime is 3644563457. The reversal of 3644563450 is 543654463.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3644563457) 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, 43762 + ... + 95938.

It is an arithmetic number, because the mean of its divisors is an integer number (155281728).

Almost surely, 2^3644563450 is an apocalyptic number.

3644563450 is an abundant number, since it is smaller than the sum of its proper divisors (3808959494).

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

3644563450 is a wasteful number, since it uses less digits than its factorization.

3644563450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52327 (or 52322 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

The square root of 3644563450 is about 60370.2198935866. The cubic root of 3644563450 is about 1538.9169100499.

The spelling of 3644563450 in words is "three billion, six hundred forty-four million, five hundred sixty-three thousand, four hundred fifty".