1804163941 has 4 divisors (see below), whose sum is σ = 1807780000. Its totient is φ = 1800547884.

The previous prime is 1804163923. The next prime is 1804163971. The reversal of 1804163941 is 1493614081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1493614081 = 47 ⋅31779023.

It is a cyclic number.

It is not a de Polignac number, because 1804163941 - 2⁹ = 1804163429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1804163941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804163971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1807281 + ... + 1808278.

It is an arithmetic number, because the mean of its divisors is an integer number (451945000).

Almost surely, 2^1804163941 is an apocalyptic number.

It is an amenable number.

1804163941 is a deficient number, since it is larger than the sum of its proper divisors (3616059).

1804163941 is an equidigital number, since it uses as much as digits as its factorization.

1804163941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616058.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1804163941 is about 42475.4510393945. The cubic root of 1804163941 is about 1217.3776741698.

The spelling of 1804163941 in words is "one billion, eight hundred four million, one hundred sixty-three thousand, nine hundred forty-one".