1801797 has 8 divisors (see below), whose sum is σ = 2506944. Its totient is φ = 1148928.

The previous prime is 1801781. The next prime is 1801817. The reversal of 1801797 is 7971081.

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

It is not a de Polignac number, because 1801797 - 2⁴ = 1801781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12988 + ... + 13125.

It is an arithmetic number, because the mean of its divisors is an integer number (313368).

2^1801797 is an apocalyptic number.

It is an amenable number.

1801797 is a deficient number, since it is larger than the sum of its proper divisors (705147).

1801797 is a wasteful number, since it uses less digits than its factorization.

1801797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26139.

The product of its (nonzero) digits is 3528, while the sum is 33.

The square root of 1801797 is about 1342.3103217960. The cubic root of 1801797 is about 121.6845068812.

The spelling of 1801797 in words is "one million, eight hundred one thousand, seven hundred ninety-seven".