189142125279769 has 2 divisors, whose sum is σ = 189142125279770. Its totient is φ = 189142125279768.

The previous prime is 189142125279743. The next prime is 189142125279781. The reversal of 189142125279769 is 967972521241981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110943246361600 + 78198878918169 = 10532960^2 + 8843013^2 .

It is a cyclic number.

It is not a de Polignac number, because 189142125279769 - 2⁷ = 189142125279641 is a prime.

It is a super-2 number, since 2×189142125279769² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (189142125279469) 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, 94571062639884 + 94571062639885.

It is an arithmetic number, because the mean of its divisors is an integer number (94571062639885).

Almost surely, 2^{189142125279769} is an apocalyptic number.

It is an amenable number.

189142125279769 is a deficient number, since it is larger than the sum of its proper divisors (1).

189142125279769 is an equidigital number, since it uses as much as digits as its factorization.

189142125279769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 274337280, while the sum is 73.

The spelling of 189142125279769 in words is "one hundred eighty-nine trillion, one hundred forty-two billion, one hundred twenty-five million, two hundred seventy-nine thousand, seven hundred sixty-nine".