1345747589 has 2 divisors, whose sum is σ = 1345747590. Its totient is φ = 1345747588.

The previous prime is 1345747567. The next prime is 1345747607. The reversal of 1345747589 is 9857475431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1071580225 + 274167364 = 32735^2 + 16558^2 .

It is an emirp because it is prime and its reverse (9857475431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345747589 - 2¹⁶ = 1345682053 is a prime.

It is a super-2 number, since 2×1345747589² = 3622073146598625842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1345747589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345749589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672873794 + 672873795.

It is an arithmetic number, because the mean of its divisors is an integer number (672873795).

Almost surely, 2^1345747589 is an apocalyptic number.

It is an amenable number.

1345747589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345747589 is an equidigital number, since it uses as much as digits as its factorization.

1345747589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 53.

The square root of 1345747589 is about 36684.4325157143. The cubic root of 1345747589 is about 1104.0477833782.

The spelling of 1345747589 in words is "one billion, three hundred forty-five million, seven hundred forty-seven thousand, five hundred eighty-nine".