9926537801 has 2 divisors, whose sum is σ = 9926537802. Its totient is φ = 9926537800.

The previous prime is 9926537749. The next prime is 9926537867. The reversal of 9926537801 is 1087356299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9384765625 + 541772176 = 96875^2 + 23276^2 .

It is an emirp because it is prime and its reverse (1087356299) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9926537801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9926537801.

It is not a weakly prime, because it can be changed into another prime (9926537891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4963268900 + 4963268901.

It is an arithmetic number, because the mean of its divisors is an integer number (4963268901).

Almost surely, 2^9926537801 is an apocalyptic number.

It is an amenable number.

9926537801 is a deficient number, since it is larger than the sum of its proper divisors (1).

9926537801 is an equidigital number, since it uses as much as digits as its factorization.

9926537801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 9926537801 is about 99632.0119288976. The cubic root of 9926537801 is about 2149.1460680212.

The spelling of 9926537801 in words is "nine billion, nine hundred twenty-six million, five hundred thirty-seven thousand, eight hundred one".