1801486 has 4 divisors (see below), whose sum is σ = 2702232. Its totient is φ = 900742.

The previous prime is 1801477. The next prime is 1801489. The reversal of 1801486 is 6841081.

1801486 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801489) 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 as a sum of consecutive naturals, namely, 450370 + ... + 450373.

It is an arithmetic number, because the mean of its divisors is an integer number (675558).

2^1801486 is an apocalyptic number.

1801486 is a deficient number, since it is larger than the sum of its proper divisors (900746).

1801486 is an equidigital number, since it uses as much as digits as its factorization.

1801486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900745.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1801486 is about 1342.1944717514. The cubic root of 1801486 is about 121.6775053416.

The spelling of 1801486 in words is "one million, eight hundred one thousand, four hundred eighty-six".