3643403240 has 32 divisors (see below), whose sum is σ = 8215253280. Its totient is φ = 1454233152.

The previous prime is 3643403237. The next prime is 3643403243. The reversal of 3643403240 is 423043463.

It is an interprime number because it is at equal distance from previous prime (3643403237) and next prime (3643403243).

It is not an unprimeable number, because it can be changed into a prime (3643403243) 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, 78842 + ... + 116201.

It is an arithmetic number, because the mean of its divisors is an integer number (256726665).

Almost surely, 2^3643403240 is an apocalyptic number.

It is an amenable number.

3643403240 is an abundant number, since it is smaller than the sum of its proper divisors (4571850040).

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

3643403240 is a wasteful number, since it uses less digits than its factorization.

3643403240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195521 (or 195517 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

The square root of 3643403240 is about 60360.6100035445. The cubic root of 3643403240 is about 1538.7535931618.

The spelling of 3643403240 in words is "three billion, six hundred forty-three million, four hundred three thousand, two hundred forty".