1349926871 has 4 divisors (see below), whose sum is σ = 1429334352. Its totient is φ = 1270519392.

The previous prime is 1349926867. The next prime is 1349926891. The reversal of 1349926871 is 1786299431.

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

It is a cyclic number.

It is not a de Polignac number, because 1349926871 - 2² = 1349926867 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 (1349926811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39703715 + ... + 39703748.

It is an arithmetic number, because the mean of its divisors is an integer number (357333588).

Almost surely, 2^1349926871 is an apocalyptic number.

1349926871 is a deficient number, since it is larger than the sum of its proper divisors (79407481).

1349926871 is an equidigital number, since it uses as much as digits as its factorization.

1349926871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79407480.

The product of its digits is 653184, while the sum is 50.

The square root of 1349926871 is about 36741.3509686293. The cubic root of 1349926871 is about 1105.1894929696.

The spelling of 1349926871 in words is "one billion, three hundred forty-nine million, nine hundred twenty-six thousand, eight hundred seventy-one".