3642321188 has 18 divisors (see below), whose sum is σ = 7006201398. Its totient is φ = 1655600320.

The previous prime is 3642321187. The next prime is 3642321233. The reversal of 3642321188 is 8811232463.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3578193124 + 64128064 = 59818^2 + 8008^2 .

It is not an unprimeable number, because it can be changed into a prime (3642321187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3762245 + ... + 3763212.

It is an arithmetic number, because the mean of its divisors is an integer number (389233411).

Almost surely, 2^3642321188 is an apocalyptic number.

It is an amenable number.

3642321188 is a deficient number, since it is larger than the sum of its proper divisors (3363880210).

3642321188 is a wasteful number, since it uses less digits than its factorization.

3642321188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7525483 (or 7525470 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 3642321188 is about 60351.6461084534. The cubic root of 3642321188 is about 1538.6012469303.

The spelling of 3642321188 in words is "three billion, six hundred forty-two million, three hundred twenty-one thousand, one hundred eighty-eight".