1306052389 has 2 divisors, whose sum is σ = 1306052390. Its totient is φ = 1306052388.

The previous prime is 1306052383. The next prime is 1306052431. The reversal of 1306052389 is 9832506031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756525025 + 549527364 = 27505^2 + 23442^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306052389 - 2¹⁹ = 1305528101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306052383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653026194 + 653026195.

It is an arithmetic number, because the mean of its divisors is an integer number (653026195).

Almost surely, 2^1306052389 is an apocalyptic number.

It is an amenable number.

1306052389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306052389 is an equidigital number, since it uses as much as digits as its factorization.

1306052389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1306052389 is about 36139.3468258628. The cubic root of 1306052389 is about 1093.0839880917.

The spelling of 1306052389 in words is "one billion, three hundred six million, fifty-two thousand, three hundred eighty-nine".