845958481 has 2 divisors, whose sum is σ = 845958482. Its totient is φ = 845958480.

The previous prime is 845958457. The next prime is 845958497. The reversal of 845958481 is 184859548.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829958481 + 16000000 = 28809^2 + 4000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-845958481 is a prime.

It is a super-2 number, since 2×845958481² = 1431291503151654722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (845958181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422979240 + 422979241.

It is an arithmetic number, because the mean of its divisors is an integer number (422979241).

Almost surely, 2^845958481 is an apocalyptic number.

It is an amenable number.

845958481 is a deficient number, since it is larger than the sum of its proper divisors (1).

845958481 is an equidigital number, since it uses as much as digits as its factorization.

845958481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843200, while the sum is 52.

The square root of 845958481 is about 29085.3654094288. The cubic root of 845958481 is about 945.7645170570.

The spelling of 845958481 in words is "eight hundred forty-five million, nine hundred fifty-eight thousand, four hundred eighty-one".