1942804845 has 40 divisors (see below), whose sum is σ = 3530418936. Its totient is φ = 1021953024.

The previous prime is 1942804817. The next prime is 1942804889. The reversal of 1942804845 is 5484082491.

1942804845 is a `hidden beast` number, since 1 + 94 + 2 + 80 + 484 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 555167844 + 1387637001 = 23562^2 + 37251^2 .

It is not a de Polignac number, because 1942804845 - 2⁶ = 1942804781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1942804845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3292 + ... + 62421.

Almost surely, 2^1942804845 is an apocalyptic number.

1942804845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1942804845 is a deficient number, since it is larger than the sum of its proper divisors (1587614091).

1942804845 is an equidigital number, since it uses as much as digits as its factorization.

1942804845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65803 (or 65794 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 1942804845 is about 44077.2599534045. The cubic root of 1942804845 is about 1247.7944777594.

The spelling of 1942804845 in words is "one billion, nine hundred forty-two million, eight hundred four thousand, eight hundred forty-five".