1340734844 has 24 divisors (see below), whose sum is σ = 2428755840. Its totient is φ = 646834496.

The previous prime is 1340734781. The next prime is 1340734897. The reversal of 1340734844 is 4484370431.

It is a junction number, because it is equal to n+sod(n) for n = 1340734798 and 1340734807.

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, 253394 + ... + 258630.

It is an arithmetic number, because the mean of its divisors is an integer number (101198160).

Almost surely, 2^1340734844 is an apocalyptic number.

It is an amenable number.

1340734844 is a deficient number, since it is larger than the sum of its proper divisors (1088020996).

1340734844 is a wasteful number, since it uses less digits than its factorization.

1340734844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7477 (or 7475 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 1340734844 is about 36616.0462638991. The cubic root of 1340734844 is about 1102.6752635365.

The spelling of 1340734844 in words is "one billion, three hundred forty million, seven hundred thirty-four thousand, eight hundred forty-four".