1481645 has 24 divisors (see below), whose sum is σ = 2042880. Its totient is φ = 1029600.

The previous prime is 1481611. The next prime is 1481663. The reversal of 1481645 is 5461841.

1481645 = 45² + 46² + ... + 165².

It is not a de Polignac number, because 1481645 - 2¹⁰ = 1480621 is a prime.

It is a super-3 number, since 3×1481645³ = 9757840929607233375, which contains 333 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 18716 + ... + 18794.

It is an arithmetic number, because the mean of its divisors is an integer number (85120).

2^1481645 is an apocalyptic number.

It is an amenable number.

1481645 is a deficient number, since it is larger than the sum of its proper divisors (561235).

1481645 is a wasteful number, since it uses less digits than its factorization.

1481645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 126 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1481645 is about 1217.2284091328. The cubic root of 1481645 is about 114.0025904818.

The spelling of 1481645 in words is "one million, four hundred eighty-one thousand, six hundred forty-five".