9450876781 has 2 divisors, whose sum is σ = 9450876782. Its totient is φ = 9450876780.

The previous prime is 9450876769. The next prime is 9450876863. The reversal of 9450876781 is 1876780549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8978510025 + 472366756 = 94755^2 + 21734^2 .

It is a cyclic number.

It is not a de Polignac number, because 9450876781 - 2¹¹ = 9450874733 is a prime.

It is a super-2 number, since 2×9450876781² (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 (9450876481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4725438390 + 4725438391.

It is an arithmetic number, because the mean of its divisors is an integer number (4725438391).

Almost surely, 2^9450876781 is an apocalyptic number.

It is an amenable number.

9450876781 is a deficient number, since it is larger than the sum of its proper divisors (1).

9450876781 is an equidigital number, since it uses as much as digits as its factorization.

9450876781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The square root of 9450876781 is about 97215.6200463691. The cubic root of 9450876781 is about 2114.2550031808.

The spelling of 9450876781 in words is "nine billion, four hundred fifty million, eight hundred seventy-six thousand, seven hundred eighty-one".