1845117894450 has 48 divisors (see below), whose sum is σ = 4774844229696. Its totient is φ = 470638766400.

The previous prime is 1845117894421. The next prime is 1845117894457. The reversal of 1845117894450 is 544987115481.

It is not an unprimeable number, because it can be changed into a prime (1845117894457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267404941 + ... + 267411840.

It is an arithmetic number, because the mean of its divisors is an integer number (99475921452).

Almost surely, 2^{1845117894450} is an apocalyptic number.

1845117894450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1845117894450 is an abundant number, since it is smaller than the sum of its proper divisors (2929726335246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1845117894450 is a wasteful number, since it uses less digits than its factorization.

1845117894450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534816819 (or 534816814 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 57.

The spelling of 1845117894450 in words is "one trillion, eight hundred forty-five billion, one hundred seventeen million, eight hundred ninety-four thousand, four hundred fifty".