385182389 has 2 divisors, whose sum is σ = 385182390. Its totient is φ = 385182388.

The previous prime is 385182377. The next prime is 385182461. The reversal of 385182389 is 983281583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346332100 + 38850289 = 18610^2 + 6233^2 .

It is a cyclic number.

It is not a de Polignac number, because 385182389 - 2⁴ = 385182373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385182349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192591194 + 192591195.

It is an arithmetic number, because the mean of its divisors is an integer number (192591195).

Almost surely, 2^385182389 is an apocalyptic number.

It is an amenable number.

385182389 is a deficient number, since it is larger than the sum of its proper divisors (1).

385182389 is an equidigital number, since it uses as much as digits as its factorization.

385182389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 47.

The square root of 385182389 is about 19626.0640221110. The cubic root of 385182389 is about 727.5934947525.

The spelling of 385182389 in words is "three hundred eighty-five million, one hundred eighty-two thousand, three hundred eighty-nine".