9793956881 has 2 divisors, whose sum is σ = 9793956882. Its totient is φ = 9793956880.

The previous prime is 9793956839. The next prime is 9793956901. The reversal of 9793956881 is 1886593979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9659744656 + 134212225 = 98284^2 + 11585^2 .

It is a cyclic number.

It is not a de Polignac number, because 9793956881 - 2⁶ = 9793956817 is a prime.

It is a super-2 number, since 2×9793956881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9793952881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4896978440 + 4896978441.

It is an arithmetic number, because the mean of its divisors is an integer number (4896978441).

Almost surely, 2^9793956881 is an apocalyptic number.

It is an amenable number.

9793956881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9793956881 is an equidigital number, since it uses as much as digits as its factorization.

9793956881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 65.

The square root of 9793956881 is about 98964.4222991273. The cubic root of 9793956881 is about 2139.5350025440.

The spelling of 9793956881 in words is "nine billion, seven hundred ninety-three million, nine hundred fifty-six thousand, eight hundred eighty-one".