189214769 has 2 divisors, whose sum is σ = 189214770. Its totient is φ = 189214768.

The previous prime is 189214747. The next prime is 189214799. The reversal of 189214769 is 967412981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179881744 + 9333025 = 13412^2 + 3055^2 .

It is a cyclic number.

It is not a de Polignac number, because 189214769 - 2⁸ = 189214513 is a prime.

It is a super-2 number, since 2×189214769² = 71604457615446722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (189214799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94607384 + 94607385.

It is an arithmetic number, because the mean of its divisors is an integer number (94607385).

Almost surely, 2^189214769 is an apocalyptic number.

It is an amenable number.

189214769 is a deficient number, since it is larger than the sum of its proper divisors (1).

189214769 is an equidigital number, since it uses as much as digits as its factorization.

189214769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 47.

The square root of 189214769 is about 13755.5359401224. The cubic root of 189214769 is about 574.0966473172.

It can be divided in two parts, 1892 and 14769, that added together give a palindrome (16661).

The spelling of 189214769 in words is "one hundred eighty-nine million, two hundred fourteen thousand, seven hundred sixty-nine".