1842085645 has 4 divisors (see below), whose sum is σ = 2210502780. Its totient is φ = 1473668512.

The previous prime is 1842085631. The next prime is 1842085667. The reversal of 1842085645 is 5465802481.

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 196728676 + 1645356969 = 14026^2 + 40563^2 .

It is a cyclic number.

It is not a de Polignac number, because 1842085645 - 2⁵ = 1842085613 is a prime.

It is a super-3 number, since 3×1842085645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184208560 + ... + 184208569.

It is an arithmetic number, because the mean of its divisors is an integer number (552625695).

Almost surely, 2^1842085645 is an apocalyptic number.

It is an amenable number.

1842085645 is a deficient number, since it is larger than the sum of its proper divisors (368417135).

1842085645 is an equidigital number, since it uses as much as digits as its factorization.

1842085645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368417134.

The product of its (nonzero) digits is 307200, while the sum is 43.

The square root of 1842085645 is about 42919.5252187160. The cubic root of 1842085645 is about 1225.8479526815.

The spelling of 1842085645 in words is "one billion, eight hundred forty-two million, eighty-five thousand, six hundred forty-five".