1343647789 has 16 divisors (see below), whose sum is σ = 1507106304. Its totient is φ = 1187348400.

The previous prime is 1343647771. The next prime is 1343647813. The reversal of 1343647789 is 9877463431.

It is a cyclic number.

It is not a de Polignac number, because 1343647789 - 2⁷ = 1343647661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1346647789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93072 + ... + 106534.

It is an arithmetic number, because the mean of its divisors is an integer number (94194144).

Almost surely, 2^1343647789 is an apocalyptic number.

It is an amenable number.

1343647789 is a deficient number, since it is larger than the sum of its proper divisors (163458515).

1343647789 is a wasteful number, since it uses less digits than its factorization.

1343647789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13728.

The product of its digits is 3048192, while the sum is 52.

The square root of 1343647789 is about 36655.8015735572. The cubic root of 1343647789 is about 1103.4732609950.

The spelling of 1343647789 in words is "one billion, three hundred forty-three million, six hundred forty-seven thousand, seven hundred eighty-nine".