1340685808 has 60 divisors (see below), whose sum is σ = 3263107120. Its totient is φ = 522339840.

The previous prime is 1340685769. The next prime is 1340685821. The reversal of 1340685808 is 8085860431.

It is a super-2 number, since 2×1340685808² = 3594876871545225728, which contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 35913 + ... + 63016.

Almost surely, 2^1340685808 is an apocalyptic number.

It is an amenable number.

1340685808 is an abundant number, since it is smaller than the sum of its proper divisors (1922421312).

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

1340685808 is a wasteful number, since it uses less digits than its factorization.

1340685808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98966 (or 98949 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 1340685808 is about 36615.3766606326. The cubic root of 1340685808 is about 1102.6618203009.

It can be divided in two parts, 134068 and 5808, that added together give a square (139876 = 374²).

The spelling of 1340685808 in words is "one billion, three hundred forty million, six hundred eighty-five thousand, eight hundred eight".