1845004427028 has 54 divisors (see below), whose sum is σ = 5425191594186. Its totient is φ = 527144121504.

The previous prime is 1845004427017. The next prime is 1845004427029. The reversal of 1845004427028 is 8207244005481.

1845004427028 is a `hidden beast` number, since 1 + 84 + 500 + 4 + 42 + 7 + 0 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1476472870404 + 368531556624 = 1215102^2 + 607068^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845004427029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 522958675 + ... + 522962202.

Almost surely, 2^{1845004427028} is an apocalyptic number.

1845004427028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1845004427028 is an abundant number, since it is smaller than the sum of its proper divisors (3580187167158).

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

1845004427028 is a wasteful number, since it uses less digits than its factorization.

1845004427028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045920901 (or 1045920889 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 45.

The spelling of 1845004427028 in words is "one trillion, eight hundred forty-five billion, four million, four hundred twenty-seven thousand, twenty-eight".