1349505688 has 32 divisors (see below), whose sum is σ = 2554896960. Its totient is φ = 668230560.

The previous prime is 1349505673. The next prime is 1349505701. The reversal of 1349505688 is 8865059431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398643 + ... + 402013.

It is an arithmetic number, because the mean of its divisors is an integer number (79840530).

Almost surely, 2^1349505688 is an apocalyptic number.

It is an amenable number.

1349505688 is a deficient number, since it is larger than the sum of its proper divisors (1205391272).

1349505688 is a wasteful number, since it uses less digits than its factorization.

1349505688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847 (or 3843 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The square root of 1349505688 is about 36735.6187915761. The cubic root of 1349505688 is about 1105.0745397189.

The spelling of 1349505688 in words is "one billion, three hundred forty-nine million, five hundred five thousand, six hundred eighty-eight".