1845185372905 has 24 divisors (see below), whose sum is σ = 2576459648448. Its totient is φ = 1264910639328.

The previous prime is 1845185372851. The next prime is 1845185372957. The reversal of 1845185372905 is 5092735815481.

It is not a de Polignac number, because 1845185372905 - 2¹¹ = 1845185370857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1845185372905.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203559 + ... + 1931788.

It is an arithmetic number, because the mean of its divisors is an integer number (107352485352).

Almost surely, 2^{1845185372905} is an apocalyptic number.

It is an amenable number.

1845185372905 is a deficient number, since it is larger than the sum of its proper divisors (731274275543).

1845185372905 is a wasteful number, since it uses less digits than its factorization.

1845185372905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138893 (or 2138886 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 58.

The spelling of 1845185372905 in words is "one trillion, eight hundred forty-five billion, one hundred eighty-five million, three hundred seventy-two thousand, nine hundred five".