1845645768 has 108 divisors (see below), whose sum is σ = 5143877505. Its totient is φ = 597839040.

The previous prime is 1845645751. The next prime is 1845645793. The reversal of 1845645768 is 8675465481.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1845645768 is a `hidden beast` number, since 1 + 8 + 4 + 5 + 64 + 576 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1250188164 + 595457604 = 35358^2 + 24402^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30378.

Its product of digits (6451200) is a multiple of the sum of its prime factors (300).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 22236655 + ... + 22236737.

Almost surely, 2^1845645768 is an apocalyptic number.

1845645768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1845645768

1845645768 is an abundant number, since it is smaller than the sum of its proper divisors (3298231737).

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

1845645768 is an equidigital number, since it uses as much as digits as its factorization.

1845645768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 149 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The square root of 1845645768 is about 42960.9795977699. The cubic root of 1845645768 is about 1226.6371597476.

The spelling of 1845645768 in words is "one billion, eight hundred forty-five million, six hundred forty-five thousand, seven hundred sixty-eight".