5428171638 has 32 divisors (see below), whose sum is σ = 12772170720. Its totient is φ = 1702955520.

The previous prime is 5428171633. The next prime is 5428171663. The reversal of 5428171638 is 8361718245.

5428171638 is a `hidden beast` number, since 5 + 4 + 2 + 8 + 1 + 7 + 1 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 5428171593 and 5428171602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5428171633) 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 15 ways as a sum of consecutive naturals, for example, 2955603 + ... + 2957438.

It is an arithmetic number, because the mean of its divisors is an integer number (399130335).

Almost surely, 2^5428171638 is an apocalyptic number.

5428171638 is an abundant number, since it is smaller than the sum of its proper divisors (7343999082).

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

5428171638 is a wasteful number, since it uses less digits than its factorization.

5428171638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5913069 (or 5913063 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 5428171638 is about 73676.1266490035. The cubic root of 5428171638 is about 1757.4562553263.

The spelling of 5428171638 in words is "five billion, four hundred twenty-eight million, one hundred seventy-one thousand, six hundred thirty-eight".