389475863251 has 2 divisors, whose sum is σ = 389475863252. Its totient is φ = 389475863250.

The previous prime is 389475863239. The next prime is 389475863263. The reversal of 389475863251 is 152368574983.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (389475863239) and next prime (389475863263).

It is a cyclic number.

It is not a de Polignac number, because 389475863251 - 2¹⁹ = 389475338963 is a prime.

It is a super-2 number, since 2×389475863251² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 389475863251.

It is not a weakly prime, because it can be changed into another prime (389475863551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194737931625 + 194737931626.

It is an arithmetic number, because the mean of its divisors is an integer number (194737931626).

Almost surely, 2^389475863251 is an apocalyptic number.

389475863251 is a deficient number, since it is larger than the sum of its proper divisors (1).

389475863251 is an equidigital number, since it uses as much as digits as its factorization.

389475863251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43545600, while the sum is 61.

The spelling of 389475863251 in words is "three hundred eighty-nine billion, four hundred seventy-five million, eight hundred sixty-three thousand, two hundred fifty-one".