5638538315 has 4 divisors (see below), whose sum is σ = 6766245984. Its totient is φ = 4510830648.

The previous prime is 5638538309. The next prime is 5638538327. The reversal of 5638538315 is 5138358365.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5638538315 - 2¹² = 5638534219 is a prime.

It is a super-2 number, since 2×5638538315² = 63586228659446078450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5638538315.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563853827 + ... + 563853836.

It is an arithmetic number, because the mean of its divisors is an integer number (1691561496).

Almost surely, 2^5638538315 is an apocalyptic number.

5638538315 is a deficient number, since it is larger than the sum of its proper divisors (1127707669).

5638538315 is a wasteful number, since it uses less digits than its factorization.

5638538315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127707668.

The product of its digits is 1296000, while the sum is 47.

The square root of 5638538315 is about 75090.2011916335. The cubic root of 5638538315 is about 1779.8723044152.

The spelling of 5638538315 in words is "five billion, six hundred thirty-eight million, five hundred thirty-eight thousand, three hundred fifteen".