1349335280 has 20 divisors (see below), whose sum is σ = 3137204712. Its totient is φ = 539734080.

The previous prime is 1349335261. The next prime is 1349335289. The reversal of 1349335280 is 825339431.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349335289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8433266 + ... + 8433425.

Almost surely, 2^1349335280 is an apocalyptic number.

1349335280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1349335280 is an abundant number, since it is smaller than the sum of its proper divisors (1787869432).

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

1349335280 is a wasteful number, since it uses less digits than its factorization.

1349335280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16866704 (or 16866698 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1349335280 is about 36733.2993345275. The cubic root of 1349335280 is about 1105.0280235585.

The spelling of 1349335280 in words is "one billion, three hundred forty-nine million, three hundred thirty-five thousand, two hundred eighty".