1801879 has 8 divisors (see below), whose sum is σ = 1855040. Its totient is φ = 1749600.

The previous prime is 1801873. The next prime is 1801897. The reversal of 1801879 is 9781081.

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 1801879 - 2³ = 1801871 is a prime.

It is a Duffinian number.

1801879 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801871) 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, 6514 + ... + 6784.

It is an arithmetic number, because the mean of its divisors is an integer number (231880).

2^1801879 is an apocalyptic number.

1801879 is a deficient number, since it is larger than the sum of its proper divisors (53161).

1801879 is a wasteful number, since it uses less digits than its factorization.

1801879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 1801879 is about 1342.3408658012. The cubic root of 1801879 is about 121.6863528121.

The spelling of 1801879 in words is "one million, eight hundred one thousand, eight hundred seventy-nine".