5578530638 has 4 divisors (see below), whose sum is σ = 8367795960. Its totient is φ = 2789265318.

The previous prime is 5578530613. The next prime is 5578530641. The reversal of 5578530638 is 8360358755.

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

It is a super-2 number, since 2×5578530638² = 62240008158209374088, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394632658 + ... + 1394632661.

It is an arithmetic number, because the mean of its divisors is an integer number (2091948990).

Almost surely, 2^5578530638 is an apocalyptic number.

5578530638 is a deficient number, since it is larger than the sum of its proper divisors (2789265322).

5578530638 is a wasteful number, since it uses less digits than its factorization.

5578530638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789265321.

The product of its (nonzero) digits is 3024000, while the sum is 50.

The square root of 5578530638 is about 74689.5617740525. The cubic root of 5578530638 is about 1773.5357242652.

The spelling of 5578530638 in words is "five billion, five hundred seventy-eight million, five hundred thirty thousand, six hundred thirty-eight".