1349315549 has 4 divisors (see below), whose sum is σ = 1349394336. Its totient is φ = 1349236764.

The previous prime is 1349315531. The next prime is 1349315573. The reversal of 1349315549 is 9455139431.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9455139431 = 457 ⋅20689583.

It is a cyclic number.

It is not a de Polignac number, because 1349315549 - 2¹⁶ = 1349250013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349315599) 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, 1649 + ... + 51974.

It is an arithmetic number, because the mean of its divisors is an integer number (337348584).

Almost surely, 2^1349315549 is an apocalyptic number.

It is an amenable number.

1349315549 is a deficient number, since it is larger than the sum of its proper divisors (78787).

1349315549 is an equidigital number, since it uses as much as digits as its factorization.

1349315549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78786.

The product of its digits is 291600, while the sum is 44.

The square root of 1349315549 is about 36733.0307625167. The cubic root of 1349315549 is about 1105.0226373474.

The spelling of 1349315549 in words is "one billion, three hundred forty-nine million, three hundred fifteen thousand, five hundred forty-nine".