9726297638 has 16 divisors (see below), whose sum is σ = 16025022720. Its totient is φ = 4406880456.

The previous prime is 9726297599. The next prime is 9726297649. The reversal of 9726297638 is 8367926279.

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, 5563370 + ... + 5565117.

It is an arithmetic number, because the mean of its divisors is an integer number (1001563920).

Almost surely, 2^9726297638 is an apocalyptic number.

9726297638 is a deficient number, since it is larger than the sum of its proper divisors (6298725082).

9726297638 is a wasteful number, since it uses less digits than its factorization.

9726297638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11128531.

The product of its digits is 13716864, while the sum is 59.

The square root of 9726297638 is about 98621.9936829509. The cubic root of 9726297638 is about 2134.5967890825.

The spelling of 9726297638 in words is "nine billion, seven hundred twenty-six million, two hundred ninety-seven thousand, six hundred thirty-eight".