1349263891 has 8 divisors (see below), whose sum is σ = 1439735120. Its totient is φ = 1260738432.

The previous prime is 1349263841. The next prime is 1349263897. The reversal of 1349263891 is 1983629431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1349263891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1349263897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485010 + ... + 487783.

It is an arithmetic number, because the mean of its divisors is an integer number (179966890).

Almost surely, 2^1349263891 is an apocalyptic number.

1349263891 is a deficient number, since it is larger than the sum of its proper divisors (90471229).

1349263891 is an equidigital number, since it uses as much as digits as its factorization.

1349263891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972885.

The product of its digits is 279936, while the sum is 46.

The square root of 1349263891 is about 36732.3276011744. The cubic root of 1349263891 is about 1105.0085353858.

The spelling of 1349263891 in words is "one billion, three hundred forty-nine million, two hundred sixty-three thousand, eight hundred ninety-one".