1845849589 has 2 divisors, whose sum is σ = 1845849590. Its totient is φ = 1845849588.

The previous prime is 1845849583. The next prime is 1845849637. The reversal of 1845849589 is 9859485481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1486102500 + 359747089 = 38550^2 + 18967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845849589 - 2⁵ = 1845849557 is a prime.

It is a super-2 number, since 2×1845849589² = 6814321410422937842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1845849583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922924794 + 922924795.

It is an arithmetic number, because the mean of its divisors is an integer number (922924795).

Almost surely, 2^1845849589 is an apocalyptic number.

It is an amenable number.

1845849589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845849589 is an equidigital number, since it uses as much as digits as its factorization.

1845849589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16588800, while the sum is 61.

The square root of 1845849589 is about 42963.3516965332. The cubic root of 1845849589 is about 1226.6823120034.

The spelling of 1845849589 in words is "one billion, eight hundred forty-five million, eight hundred forty-nine thousand, five hundred eighty-nine".