189106769 has 2 divisors, whose sum is σ = 189106770. Its totient is φ = 189106768.

The previous prime is 189106751. The next prime is 189106783. The reversal of 189106769 is 967601981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183250369 + 5856400 = 13537^2 + 2420^2 .

It is an emirp because it is prime and its reverse (967601981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189106769 - 2¹² = 189102673 is a prime.

It is a super-2 number, since 2×189106769² = 71522740163238722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (189106369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94553384 + 94553385.

It is an arithmetic number, because the mean of its divisors is an integer number (94553385).

Almost surely, 2^189106769 is an apocalyptic number.

It is an amenable number.

189106769 is a deficient number, since it is larger than the sum of its proper divisors (1).

189106769 is an equidigital number, since it uses as much as digits as its factorization.

189106769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 189106769 is about 13751.6096875966. The cubic root of 189106769 is about 573.9873989067.

The spelling of 189106769 in words is "one hundred eighty-nine million, one hundred six thousand, seven hundred sixty-nine".