1443671349 has 4 divisors (see below), whose sum is σ = 1924895136. Its totient is φ = 962447564.

The previous prime is 1443671347. The next prime is 1443671393. The reversal of 1443671349 is 9431763441.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9431763441 = 3 ⋅3143921147.

It is a cyclic number.

It is not a de Polignac number, because 1443671349 - 2¹ = 1443671347 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1443671349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443671347) 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, 240611889 + ... + 240611894.

It is an arithmetic number, because the mean of its divisors is an integer number (481223784).

Almost surely, 2^1443671349 is an apocalyptic number.

It is an amenable number.

1443671349 is a deficient number, since it is larger than the sum of its proper divisors (481223787).

1443671349 is an equidigital number, since it uses as much as digits as its factorization.

1443671349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481223786.

The product of its digits is 217728, while the sum is 42.

The square root of 1443671349 is about 37995.6753986556. The cubic root of 1443671349 is about 1130.2021068003.

The spelling of 1443671349 in words is "one billion, four hundred forty-three million, six hundred seventy-one thousand, three hundred forty-nine".