1349571673 has 4 divisors (see below), whose sum is σ = 1428958260. Its totient is φ = 1270185088.

The previous prime is 1349571661. The next prime is 1349571679. The reversal of 1349571673 is 3761759431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1204922944 + 144648729 = 34712^2 + 12027^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349571673 - 2²⁹ = 812700761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1349571679) 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 3 ways as a sum of consecutive naturals, for example, 39693268 + ... + 39693301.

It is an arithmetic number, because the mean of its divisors is an integer number (357239565).

Almost surely, 2^1349571673 is an apocalyptic number.

It is an amenable number.

1349571673 is a deficient number, since it is larger than the sum of its proper divisors (79386587).

1349571673 is an equidigital number, since it uses as much as digits as its factorization.

1349571673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79386586.

The product of its digits is 476280, while the sum is 46.

The square root of 1349571673 is about 36736.5168871519. The cubic root of 1349571673 is about 1105.0925505495.

It can be divided in two parts, 1349571 and 673, that added together give a square (1350244 = 1162²).

The spelling of 1349571673 in words is "one billion, three hundred forty-nine million, five hundred seventy-one thousand, six hundred seventy-three".