1845725866842 has 64 divisors (see below), whose sum is σ = 4337159831424. Its totient is φ = 516245360640.

The previous prime is 1845725866841. The next prime is 1845725866847. The reversal of 1845725866842 is 2486685275481.

It is a happy number.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (1845725866841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11466178 + ... + 11626034.

It is an arithmetic number, because the mean of its divisors is an integer number (67768122366).

Almost surely, 2^{1845725866842} is an apocalyptic number.

1845725866842 is an abundant number, since it is smaller than the sum of its proper divisors (2491433964582).

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

1845725866842 is a wasteful number, since it uses less digits than its factorization.

1845725866842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173343.

The product of its digits is 206438400, while the sum is 66.

The spelling of 1845725866842 in words is "one trillion, eight hundred forty-five billion, seven hundred twenty-five million, eight hundred sixty-six thousand, eight hundred forty-two".