1347785149 has 4 divisors (see below), whose sum is σ = 1351002240. Its totient is φ = 1344568060.

The previous prime is 1347785137. The next prime is 1347785191. The reversal of 1347785149 is 9415877431.

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 a cyclic number.

It is not a de Polignac number, because 1347785149 - 2¹³ = 1347776957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347786149) 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, 1607917 + ... + 1608754.

It is an arithmetic number, because the mean of its divisors is an integer number (337750560).

Almost surely, 2^1347785149 is an apocalyptic number.

It is an amenable number.

1347785149 is a deficient number, since it is larger than the sum of its proper divisors (3217091).

1347785149 is an equidigital number, since it uses as much as digits as its factorization.

1347785149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217090.

The product of its digits is 846720, while the sum is 49.

The square root of 1347785149 is about 36712.1934648422. The cubic root of 1347785149 is about 1104.6047053546.

The spelling of 1347785149 in words is "one billion, three hundred forty-seven million, seven hundred eighty-five thousand, one hundred forty-nine".