1845185145 has 8 divisors (see below), whose sum is σ = 2952296256. Its totient is φ = 984098736.

The previous prime is 1845185141. The next prime is 1845185149. The reversal of 1845185145 is 5415815481.

It is an interprime number because it is at equal distance from previous prime (1845185141) and next prime (1845185149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1845185145 - 2² = 1845185141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1845185097 and 1845185106.

It is not an unprimeable number, because it can be changed into a prime (1845185141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61506157 + ... + 61506186.

It is an arithmetic number, because the mean of its divisors is an integer number (369037032).

Almost surely, 2^1845185145 is an apocalyptic number.

1845185145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1845185145 is a deficient number, since it is larger than the sum of its proper divisors (1107111111).

1845185145 is a wasteful number, since it uses less digits than its factorization.

1845185145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123012351.

The product of its digits is 128000, while the sum is 42.

The square root of 1845185145 is about 42955.6183170491. The cubic root of 1845185145 is about 1226.5351061630.

The spelling of 1845185145 in words is "one billion, eight hundred forty-five million, one hundred eighty-five thousand, one hundred forty-five".