1804197959 has 8 divisors (see below), whose sum is σ = 1853571600. Its totient is φ = 1754856576.

The previous prime is 1804197887. The next prime is 1804197973. The reversal of 1804197959 is 9597914081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1804197959 - 2¹⁶ = 1804132423 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 1804197959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804197859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143792 + ... + 155834.

It is an arithmetic number, because the mean of its divisors is an integer number (231696450).

Almost surely, 2^1804197959 is an apocalyptic number.

1804197959 is a deficient number, since it is larger than the sum of its proper divisors (49373641).

1804197959 is a wasteful number, since it uses less digits than its factorization.

1804197959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16129.

The product of its (nonzero) digits is 816480, while the sum is 53.

The square root of 1804197959 is about 42475.8514805766. The cubic root of 1804197959 is about 1217.3853254504.

The spelling of 1804197959 in words is "one billion, eight hundred four million, one hundred ninety-seven thousand, nine hundred fifty-nine".