1801113 has 4 divisors (see below), whose sum is σ = 2401488. Its totient is φ = 1200740.

The previous prime is 1801109. The next prime is 1801117. The reversal of 1801113 is 3111081.

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.

It is an interprime number because it is at equal distance from previous prime (1801109) and next prime (1801117).

It is a cyclic number.

It is not a de Polignac number, because 1801113 - 2² = 1801109 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1801092 and 1801101.

It is not an unprimeable number, because it can be changed into a prime (1801117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300183 + ... + 300188.

It is an arithmetic number, because the mean of its divisors is an integer number (600372).

2^1801113 is an apocalyptic number.

It is an amenable number.

1801113 is a deficient number, since it is larger than the sum of its proper divisors (600375).

1801113 is an equidigital number, since it uses as much as digits as its factorization.

1801113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600374.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1801113 is about 1342.0555130098. The cubic root of 1801113 is about 121.6691069338.

Adding to 1801113 its reverse (3111081), we get a palindrome (4912194).

The spelling of 1801113 in words is "one million, eight hundred one thousand, one hundred thirteen".