389198309629 has 2 divisors, whose sum is σ = 389198309630. Its totient is φ = 389198309628.

The previous prime is 389198309561. The next prime is 389198309657. The reversal of 389198309629 is 926903891983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253864822500 + 135333487129 = 503850^2 + 367877^2 .

It is a cyclic number.

It is not a de Polignac number, because 389198309629 - 2⁹ = 389198309117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389198309429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194599154814 + 194599154815.

It is an arithmetic number, because the mean of its divisors is an integer number (194599154815).

Almost surely, 2^389198309629 is an apocalyptic number.

It is an amenable number.

389198309629 is a deficient number, since it is larger than the sum of its proper divisors (1).

389198309629 is an equidigital number, since it uses as much as digits as its factorization.

389198309629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45349632, while the sum is 67.

The spelling of 389198309629 in words is "three hundred eighty-nine billion, one hundred ninety-eight million, three hundred nine thousand, six hundred twenty-nine".