3457842389 has 2 divisors, whose sum is σ = 3457842390. Its totient is φ = 3457842388.

The previous prime is 3457842383. The next prime is 3457842419. The reversal of 3457842389 is 9832487543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1947898225 + 1509944164 = 44135^2 + 38858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3457842389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3457842389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3457842383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1728921194 + 1728921195.

It is an arithmetic number, because the mean of its divisors is an integer number (1728921195).

Almost surely, 2^3457842389 is an apocalyptic number.

It is an amenable number.

3457842389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3457842389 is an equidigital number, since it uses as much as digits as its factorization.

3457842389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 53.

The square root of 3457842389 is about 58803.4215756192. The cubic root of 3457842389 is about 1512.1738770402.

It can be divided in two parts, 34578 and 42389, that added together give a palindrome (76967).

The spelling of 3457842389 in words is "three billion, four hundred fifty-seven million, eight hundred forty-two thousand, three hundred eighty-nine".