5638749526 has 16 divisors (see below), whose sum is σ = 8779760640. Its totient is φ = 2713179240.

The previous prime is 5638749509. The next prime is 5638749551. The reversal of 5638749526 is 6259478365.

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, 242946 + ... + 265141.

It is an arithmetic number, because the mean of its divisors is an integer number (548735040).

Almost surely, 2^5638749526 is an apocalyptic number.

5638749526 is a deficient number, since it is larger than the sum of its proper divisors (3141011114).

5638749526 is a wasteful number, since it uses less digits than its factorization.

5638749526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508299.

The product of its digits is 10886400, while the sum is 55.

The square root of 5638749526 is about 75091.6075603659. The cubic root of 5638749526 is about 1779.8945279002.

The spelling of 5638749526 in words is "five billion, six hundred thirty-eight million, seven hundred forty-nine thousand, five hundred twenty-six".