1349257756 has 24 divisors (see below), whose sum is σ = 2943835776. Its totient is φ = 525684720.

The previous prime is 1349257747. The next prime is 1349257769. The reversal of 1349257756 is 6577529431.

It is a congruent number.

It is an unprimeable number.

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, 2190046 + ... + 2190661.

It is an arithmetic number, because the mean of its divisors is an integer number (122659824).

Almost surely, 2^1349257756 is an apocalyptic number.

It is an amenable number.

1349257756 is an abundant number, since it is smaller than the sum of its proper divisors (1594578020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1349257756 is a wasteful number, since it uses less digits than its factorization.

1349257756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380729 (or 4380727 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 49.

The square root of 1349257756 is about 36732.2440915335. The cubic root of 1349257756 is about 1105.0068605868.

The spelling of 1349257756 in words is "one billion, three hundred forty-nine million, two hundred fifty-seven thousand, seven hundred fifty-six".