1845627449 has 2 divisors, whose sum is σ = 1845627450. Its totient is φ = 1845627448.

The previous prime is 1845627437. The next prime is 1845627517. The reversal of 1845627449 is 9447265481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1725571600 + 120055849 = 41540^2 + 10957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1845627449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1845627397 and 1845627406.

It is not a weakly prime, because it can be changed into another prime (1845627409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922813724 + 922813725.

It is an arithmetic number, because the mean of its divisors is an integer number (922813725).

Almost surely, 2^1845627449 is an apocalyptic number.

It is an amenable number.

1845627449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845627449 is an equidigital number, since it uses as much as digits as its factorization.

1845627449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 50.

The square root of 1845627449 is about 42960.7663921397. The cubic root of 1845627449 is about 1226.6331013956.

The spelling of 1845627449 in words is "one billion, eight hundred forty-five million, six hundred twenty-seven thousand, four hundred forty-nine".