1481821 has 8 divisors (see below), whose sum is σ = 1687104. Its totient is φ = 1288320.

The previous prime is 1481819. The next prime is 1481849. The reversal of 1481821 is 1281841.

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

It is not a de Polignac number, because 1481821 - 2¹ = 1481819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481801) 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, 2676 + ... + 3181.

It is an arithmetic number, because the mean of its divisors is an integer number (210888).

2^1481821 is an apocalyptic number.

1481821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1481821 is a deficient number, since it is larger than the sum of its proper divisors (205283).

1481821 is a wasteful number, since it uses less digits than its factorization.

1481821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891.

The product of its digits is 512, while the sum is 25.

The square root of 1481821 is about 1217.3007023739. The cubic root of 1481821 is about 114.0071043074.

The spelling of 1481821 in words is "one million, four hundred eighty-one thousand, eight hundred twenty-one".