9438951953 has 2 divisors, whose sum is σ = 9438951954. Its totient is φ = 9438951952.

The previous prime is 9438951923. The next prime is 9438951989. The reversal of 9438951953 is 3591598349.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7714460224 + 1724491729 = 87832^2 + 41527^2 .

It is a cyclic number.

It is not a de Polignac number, because 9438951953 - 2¹² = 9438947857 is a prime.

It is not a weakly prime, because it can be changed into another prime (9438951923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4719475976 + 4719475977.

It is an arithmetic number, because the mean of its divisors is an integer number (4719475977).

Almost surely, 2^9438951953 is an apocalyptic number.

It is an amenable number.

9438951953 is a deficient number, since it is larger than the sum of its proper divisors (1).

9438951953 is an equidigital number, since it uses as much as digits as its factorization.

9438951953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5248800, while the sum is 56.

The square root of 9438951953 is about 97154.2688357027. The cubic root of 9438951953 is about 2113.3653947614.

The spelling of 9438951953 in words is "nine billion, four hundred thirty-eight million, nine hundred fifty-one thousand, nine hundred fifty-three".