1349611478 has 4 divisors (see below), whose sum is σ = 2024417220. Its totient is φ = 674805738.

The previous prime is 1349611469. The next prime is 1349611507. The reversal of 1349611478 is 8741169431.

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

It is a super-2 number, since 2×1349611478² = 3642902283098688968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337402868 + ... + 337402871.

It is an arithmetic number, because the mean of its divisors is an integer number (506104305).

Almost surely, 2^1349611478 is an apocalyptic number.

1349611478 is a deficient number, since it is larger than the sum of its proper divisors (674805742).

1349611478 is an equidigital number, since it uses as much as digits as its factorization.

1349611478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674805741.

The product of its digits is 145152, while the sum is 44.

The square root of 1349611478 is about 36737.0586465493. The cubic root of 1349611478 is about 1105.1034151760.

The spelling of 1349611478 in words is "one billion, three hundred forty-nine million, six hundred eleven thousand, four hundred seventy-eight".