1481639 has 8 divisors (see below), whose sum is σ = 1614000. Its totient is φ = 1354752.

The previous prime is 1481611. The next prime is 1481663. The reversal of 1481639 is 9361841.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1481639 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 (1481239) 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, 794 + ... + 1895.

It is an arithmetic number, because the mean of its divisors is an integer number (201750).

2^1481639 is an apocalyptic number.

1481639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1481639 is a deficient number, since it is larger than the sum of its proper divisors (132361).

1481639 is a wasteful number, since it uses less digits than its factorization.

1481639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737.

The product of its digits is 5184, while the sum is 32.

The square root of 1481639 is about 1217.2259445148. The cubic root of 1481639 is about 114.0024365951.

The spelling of 1481639 in words is "one million, four hundred eighty-one thousand, six hundred thirty-nine".