845883091 has 2 divisors, whose sum is σ = 845883092. Its totient is φ = 845883090.

The previous prime is 845883079. The next prime is 845883133. The reversal of 845883091 is 190388548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 845883091 - 2¹⁹ = 845358803 is a prime.

It is not a weakly prime, because it can be changed into another prime (845883001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422941545 + 422941546.

It is an arithmetic number, because the mean of its divisors is an integer number (422941546).

Almost surely, 2^845883091 is an apocalyptic number.

845883091 is a deficient number, since it is larger than the sum of its proper divisors (1).

845883091 is an equidigital number, since it uses as much as digits as its factorization.

845883091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 845883091 is about 29084.0693679547. The cubic root of 845883091 is about 945.7364213893.

The spelling of 845883091 in words is "eight hundred forty-five million, eight hundred eighty-three thousand, ninety-one".