189146465279 has 2 divisors, whose sum is σ = 189146465280. Its totient is φ = 189146465278.

The previous prime is 189146465269. The next prime is 189146465297. The reversal of 189146465279 is 972564641981.

Together with next prime (189146465297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189146465279 - 2⁸ = 189146465023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189146465239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94573232639 + 94573232640.

It is an arithmetic number, because the mean of its divisors is an integer number (94573232640).

Almost surely, 2^189146465279 is an apocalyptic number.

189146465279 is a deficient number, since it is larger than the sum of its proper divisors (1).

189146465279 is an equidigital number, since it uses as much as digits as its factorization.

189146465279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 62.

The spelling of 189146465279 in words is "one hundred eighty-nine billion, one hundred forty-six million, four hundred sixty-five thousand, two hundred seventy-nine".