6428188553 has 2 divisors, whose sum is σ = 6428188554. Its totient is φ = 6428188552.

The previous prime is 6428188537. The next prime is 6428188619. The reversal of 6428188553 is 3558818246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4495970704 + 1932217849 = 67052^2 + 43957^2 .

It is a cyclic number.

It is not a de Polignac number, because 6428188553 - 2⁴ = 6428188537 is a prime.

It is not a weakly prime, because it can be changed into another prime (6428188513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214094276 + 3214094277.

It is an arithmetic number, because the mean of its divisors is an integer number (3214094277).

Almost surely, 2^6428188553 is an apocalyptic number.

It is an amenable number.

6428188553 is a deficient number, since it is larger than the sum of its proper divisors (1).

6428188553 is an equidigital number, since it uses as much as digits as its factorization.

6428188553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843200, while the sum is 50.

The square root of 6428188553 is about 80175.9848894917. The cubic root of 6428188553 is about 1859.3573677938.

The spelling of 6428188553 in words is "six billion, four hundred twenty-eight million, one hundred eighty-eight thousand, five hundred fifty-three".