6438916053 has 12 divisors (see below), whose sum is σ = 9527502348. Its totient is φ = 4187912640.

The previous prime is 6438916051. The next prime is 6438916091. The reversal of 6438916053 is 3506198346.

6438916053 is a `hidden beast` number, since 6 + 4 + 38 + 9 + 1 + 605 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2325361284 + 4113554769 = 48222^2 + 64137^2 .

It is not a de Polignac number, because 6438916053 - 2¹ = 6438916051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438916051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8724450 + ... + 8725187.

It is an arithmetic number, because the mean of its divisors is an integer number (793958529).

Almost surely, 2^6438916053 is an apocalyptic number.

It is an amenable number.

6438916053 is a deficient number, since it is larger than the sum of its proper divisors (3088586295).

6438916053 is a wasteful number, since it uses less digits than its factorization.

6438916053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17449684 (or 17449681 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 6438916053 is about 80242.8567101147. The cubic root of 6438916053 is about 1860.3911048875.

The spelling of 6438916053 in words is "six billion, four hundred thirty-eight million, nine hundred sixteen thousand, fifty-three".