1339685680 has 40 divisors (see below), whose sum is σ = 3297994272. Its totient is φ = 504351744.

The previous prime is 1339685639. The next prime is 1339685693. The reversal of 1339685680 is 865869331.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491172 + ... + 493891.

Almost surely, 2^1339685680 is an apocalyptic number.

1339685680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1339685680 is an abundant number, since it is smaller than the sum of its proper divisors (1958308592).

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

1339685680 is a wasteful number, since it uses less digits than its factorization.

1339685680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985093 (or 985087 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 1339685680 is about 36601.7168996210. The cubic root of 1339685680 is about 1102.3875633268.

The spelling of 1339685680 in words is "one billion, three hundred thirty-nine million, six hundred eighty-five thousand, six hundred eighty".