9126951989 has 2 divisors, whose sum is σ = 9126951990. Its totient is φ = 9126951988.

The previous prime is 9126951941. The next prime is 9126951997. The reversal of 9126951989 is 9891596219.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8139107089 + 987844900 = 90217^2 + 31430^2 .

It is a cyclic number.

It is not a de Polignac number, because 9126951989 - 2⁸ = 9126951733 is a prime.

It is a super-2 number, since 2×9126951989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9126951289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4563475994 + 4563475995.

It is an arithmetic number, because the mean of its divisors is an integer number (4563475995).

Almost surely, 2^9126951989 is an apocalyptic number.

It is an amenable number.

9126951989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9126951989 is an equidigital number, since it uses as much as digits as its factorization.

9126951989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 59.

The square root of 9126951989 is about 95535.0825037588. The cubic root of 9126951989 is about 2089.8185925741.

The spelling of 9126951989 in words is "nine billion, one hundred twenty-six million, nine hundred fifty-one thousand, nine hundred eighty-nine".