1349732880 has 60 divisors (see below), whose sum is σ = 4532855340. Its totient is φ = 359928576.

The previous prime is 1349732873. The next prime is 1349732941. The reversal of 1349732880 is 882379431.

It can be written as a sum of positive squares in 2 ways, for example, as 185831424 + 1163901456 = 13632^2 + 34116^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 11 ways as a sum of consecutive naturals, for example, 936595 + ... + 938034.

It is an arithmetic number, because the mean of its divisors is an integer number (75547589).

Almost surely, 2^1349732880 is an apocalyptic number.

1349732880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1349732880 is an abundant number, since it is smaller than the sum of its proper divisors (3183122460).

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

1349732880 is a wasteful number, since it uses less digits than its factorization.

1349732880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874648 (or 1874639 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1349732880 is about 36738.7109191381. The cubic root of 1349732880 is about 1105.1365500805.

The spelling of 1349732880 in words is "one billion, three hundred forty-nine million, seven hundred thirty-two thousand, eight hundred eighty".