8435480981 has 2 divisors, whose sum is σ = 8435480982. Its totient is φ = 8435480980.

The previous prime is 8435480969. The next prime is 8435481029. The reversal of 8435480981 is 1890845348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6849052081 + 1586428900 = 82759^2 + 39830^2 .

It is a cyclic number.

It is not a de Polignac number, because 8435480981 - 2¹⁰ = 8435479957 is a prime.

It is a super-2 number, since 2×8435480981² (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 (8435480281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217740490 + 4217740491.

It is an arithmetic number, because the mean of its divisors is an integer number (4217740491).

Almost surely, 2^8435480981 is an apocalyptic number.

It is an amenable number.

8435480981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8435480981 is an equidigital number, since it uses as much as digits as its factorization.

8435480981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 8435480981 is about 91844.8745494271. The cubic root of 8435480981 is about 2035.6508154701.

The spelling of 8435480981 in words is "eight billion, four hundred thirty-five million, four hundred eighty thousand, nine hundred eighty-one".