1343683640 has 32 divisors (see below), whose sum is σ = 3255850080. Its totient is φ = 496129152.

The previous prime is 1343683631. The next prime is 1343683669. The reversal of 1343683640 is 463863431.

It is a junction number, because it is equal to n+sod(n) for n = 1343683594 and 1343683603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291484 + ... + 1292523.

It is an arithmetic number, because the mean of its divisors is an integer number (101745315).

Almost surely, 2^1343683640 is an apocalyptic number.

1343683640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1343683640 is an abundant number, since it is smaller than the sum of its proper divisors (1912166440).

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

1343683640 is a wasteful number, since it uses less digits than its factorization.

1343683640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584031 (or 2584027 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 1343683640 is about 36656.2905924754. The cubic root of 1343683640 is about 1103.4830751413.

The spelling of 1343683640 in words is "one billion, three hundred forty-three million, six hundred eighty-three thousand, six hundred forty".