3213645380 has 48 divisors (see below), whose sum is σ = 7599674880. Its totient is φ = 1130899200.

The previous prime is 3213645367. The next prime is 3213645401. The reversal of 3213645380 is 835463123.

3213645380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3213645380.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228785 + ... + 242424.

It is an arithmetic number, because the mean of its divisors is an integer number (158326560).

Almost surely, 2^3213645380 is an apocalyptic number.

It is an amenable number.

3213645380 is an abundant number, since it is smaller than the sum of its proper divisors (4386029500).

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

3213645380 is a wasteful number, since it uses less digits than its factorization.

3213645380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471260 (or 471258 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 3213645380 is about 56689.0234525168. The cubic root of 3213645380 is about 1475.7042129997.

The spelling of 3213645380 in words is "three billion, two hundred thirteen million, six hundred forty-five thousand, three hundred eighty".