1847185481045 has 4 divisors (see below), whose sum is σ = 2216622577260. Its totient is φ = 1477748384832.

The previous prime is 1847185481023. The next prime is 1847185481047. The reversal of 1847185481045 is 5401845817481.

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 241082964004 + 1606102517041 = 491002^2 + 1267321^2 .

It is a cyclic number.

It is not a de Polignac number, because 1847185481045 - 2⁶ = 1847185480981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1847185481047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184718548100 + ... + 184718548109.

It is an arithmetic number, because the mean of its divisors is an integer number (554155644315).

Almost surely, 2^{1847185481045} is an apocalyptic number.

It is an amenable number.

1847185481045 is a deficient number, since it is larger than the sum of its proper divisors (369437096215).

1847185481045 is an equidigital number, since it uses as much as digits as its factorization.

1847185481045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369437096214.

The product of its (nonzero) digits is 5734400, while the sum is 56.

The spelling of 1847185481045 in words is "one trillion, eight hundred forty-seven billion, one hundred eighty-five million, four hundred eighty-one thousand, forty-five".