1243332347389 has 8 divisors (see below), whose sum is σ = 1356383125440. Its totient is φ = 1130284996800.

The previous prime is 1243332347353. The next prime is 1243332347399. The reversal of 1243332347389 is 9837432333421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243332347389 - 2¹⁹ = 1243331823101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243332347339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66684 + ... + 1578325.

It is an arithmetic number, because the mean of its divisors is an integer number (169547890680).

Almost surely, 2^{1243332347389} is an apocalyptic number.

It is an amenable number.

1243332347389 is a deficient number, since it is larger than the sum of its proper divisors (113050778051).

1243332347389 is a wasteful number, since it uses less digits than its factorization.

1243332347389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713731.

The product of its digits is 7838208, while the sum is 52.

The spelling of 1243332347389 in words is "one trillion, two hundred forty-three billion, three hundred thirty-two million, three hundred forty-seven thousand, three hundred eighty-nine".