1801299 has 4 divisors (see below), whose sum is σ = 2401736. Its totient is φ = 1200864.

The previous prime is 1801297. The next prime is 1801309. The reversal of 1801299 is 9921081.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1801299 - 2¹ = 1801297 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1801297) 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 3 ways as a sum of consecutive naturals, for example, 300214 + ... + 300219.

It is an arithmetic number, because the mean of its divisors is an integer number (600434).

2^1801299 is an apocalyptic number.

1801299 is a deficient number, since it is larger than the sum of its proper divisors (600437).

1801299 is an equidigital number, since it uses as much as digits as its factorization.

1801299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600436.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1801299 is about 1342.1248079072. The cubic root of 1801299 is about 121.6732950247.

The spelling of 1801299 in words is "one million, eight hundred one thousand, two hundred ninety-nine".