9558738949 has 2 divisors, whose sum is σ = 9558738950. Its totient is φ = 9558738948.

The previous prime is 9558738911. The next prime is 9558738961. The reversal of 9558738949 is 9498378559.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6819786724 + 2738952225 = 82582^2 + 52335^2 .

It is a cyclic number.

It is not a de Polignac number, because 9558738949 - 2²¹ = 9556641797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9558738349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4779369474 + 4779369475.

It is an arithmetic number, because the mean of its divisors is an integer number (4779369475).

Almost surely, 2^9558738949 is an apocalyptic number.

It is an amenable number.

9558738949 is a deficient number, since it is larger than the sum of its proper divisors (1).

9558738949 is an equidigital number, since it uses as much as digits as its factorization.

9558738949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97977600, while the sum is 67.

The square root of 9558738949 is about 97768.8035571675. The cubic root of 9558738949 is about 2122.2678760377.

The spelling of 9558738949 in words is "nine billion, five hundred fifty-eight million, seven hundred thirty-eight thousand, nine hundred forty-nine".