1348479991 has 2 divisors, whose sum is σ = 1348479992. Its totient is φ = 1348479990.

The previous prime is 1348479983. The next prime is 1348480009. The reversal of 1348479991 is 1999748431.

It is a weak prime.

It is an emirp because it is prime and its reverse (1999748431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1348479991 - 2³ = 1348479983 is a prime.

It is a super-2 number, since 2×1348479991² = 3636796572254720162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1348479931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674239995 + 674239996.

It is an arithmetic number, because the mean of its divisors is an integer number (674239996).

Almost surely, 2^1348479991 is an apocalyptic number.

1348479991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1348479991 is an equidigital number, since it uses as much as digits as its factorization.

1348479991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The square root of 1348479991 is about 36721.6556135477. The cubic root of 1348479991 is about 1104.7944967032.

The spelling of 1348479991 in words is "one billion, three hundred forty-eight million, four hundred seventy-nine thousand, nine hundred ninety-one".