1441665013 has 4 divisors (see below), whose sum is σ = 1488170368. Its totient is φ = 1395159660.

The previous prime is 1441665007. The next prime is 1441665019. The reversal of 1441665013 is 3105661441.

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 (1441665007) and next prime (1441665019).

It is a cyclic number.

It is not a de Polignac number, because 1441665013 - 2¹⁷ = 1441533941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 46505323 = 1441665013 / (1 + 4 + 4 + 1 + 6 + 6 + 5 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1441665019) 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, 23252631 + ... + 23252692.

It is an arithmetic number, because the mean of its divisors is an integer number (372042592).

Almost surely, 2^1441665013 is an apocalyptic number.

It is an amenable number.

1441665013 is a deficient number, since it is larger than the sum of its proper divisors (46505355).

1441665013 is an equidigital number, since it uses as much as digits as its factorization.

1441665013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46505354.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1441665013 is about 37969.2640566024. The cubic root of 1441665013 is about 1129.6782995793.

The spelling of 1441665013 in words is "one billion, four hundred forty-one million, six hundred sixty-five thousand, thirteen".