1340843868 has 336 divisors, whose sum is σ = 4497074176. Its totient is φ = 340122240.

The previous prime is 1340843843. The next prime is 1340843879. The reversal of 1340843868 is 8683480431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 8225955 + ... + 8226117.

Almost surely, 2^1340843868 is an apocalyptic number.

1340843868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340843868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2248537088).

1340843868 is an abundant number, since it is smaller than the sum of its proper divisors (3156230308).

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

1340843868 is a wasteful number, since it uses less digits than its factorization.

1340843868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 1340843868 is about 36617.5349798426. The cubic root of 1340843868 is about 1102.7051513278.

The spelling of 1340843868 in words is "one billion, three hundred forty million, eight hundred forty-three thousand, eight hundred sixty-eight".