5486643638 has 16 divisors (see below), whose sum is σ = 9443153664. Its totient is φ = 2342049000.

The previous prime is 5486643611. The next prime is 5486643683. The reversal of 5486643638 is 8363466845.

It is a self number, because there is not a number n which added to its sum of digits gives 5486643638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 777170 + ... + 784197.

It is an arithmetic number, because the mean of its divisors is an integer number (590197104).

Almost surely, 2^5486643638 is an apocalyptic number.

5486643638 is a deficient number, since it is larger than the sum of its proper divisors (3956510026).

5486643638 is a wasteful number, since it uses less digits than its factorization.

5486643638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561627.

The product of its digits is 9953280, while the sum is 53.

The square root of 5486643638 is about 74071.8815610890. The cubic root of 5486643638 is about 1763.7441424854.

The spelling of 5486643638 in words is "five billion, four hundred eighty-six million, six hundred forty-three thousand, six hundred thirty-eight".