1845007345 has 4 divisors (see below), whose sum is σ = 2214008820. Its totient is φ = 1476005872.

The previous prime is 1845007343. The next prime is 1845007361. The reversal of 1845007345 is 5437005481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 724632561 + 1120374784 = 26919^2 + 33472^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845007345 - 2¹ = 1845007343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1845007343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184500730 + ... + 184500739.

It is an arithmetic number, because the mean of its divisors is an integer number (553502205).

Almost surely, 2^1845007345 is an apocalyptic number.

It is an amenable number.

1845007345 is a deficient number, since it is larger than the sum of its proper divisors (369001475).

1845007345 is an equidigital number, since it uses as much as digits as its factorization.

1845007345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369001474.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 1845007345 is about 42953.5486892527. The cubic root of 1845007345 is about 1226.4957090421.

The spelling of 1845007345 in words is "one billion, eight hundred forty-five million, seven thousand, three hundred forty-five".