9523978049 has 2 divisors, whose sum is σ = 9523978050. Its totient is φ = 9523978048.

The previous prime is 9523978039. The next prime is 9523978067. The reversal of 9523978049 is 9408793259.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5525692225 + 3998285824 = 74335^2 + 63232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9523978049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9523977985 and 9523978003.

It is not a weakly prime, because it can be changed into another prime (9523978039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4761989024 + 4761989025.

It is an arithmetic number, because the mean of its divisors is an integer number (4761989025).

Almost surely, 2^9523978049 is an apocalyptic number.

It is an amenable number.

9523978049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9523978049 is an equidigital number, since it uses as much as digits as its factorization.

9523978049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The square root of 9523978049 is about 97590.8707256985. The cubic root of 9523978049 is about 2119.6921685026.

The spelling of 9523978049 in words is "nine billion, five hundred twenty-three million, nine hundred seventy-eight thousand, forty-nine".