6221542188 has 24 divisors (see below), whose sum is σ = 14518259392. Its totient is φ = 2073657744.

The previous prime is 6221542181. The next prime is 6221542199. The reversal of 6221542188 is 8812451226.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6221542181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190131 + ... + 220437.

Almost surely, 2^6221542188 is an apocalyptic number.

It is an amenable number.

6221542188 is an abundant number, since it is smaller than the sum of its proper divisors (8296717204).

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

6221542188 is a wasteful number, since it uses less digits than its factorization.

6221542188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47421 (or 47419 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 6221542188 is about 78876.7531532580. The cubic root of 6221542188 is about 1839.2157759966.

The spelling of 6221542188 in words is "six billion, two hundred twenty-one million, five hundred forty-two thousand, one hundred eighty-eight".