189378053 has 2 divisors, whose sum is σ = 189378054. Its totient is φ = 189378052.

The previous prime is 189377989. The next prime is 189378071. The reversal of 189378053 is 350873981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99640324 + 89737729 = 9982^2 + 9473^2 .

It is a cyclic number.

It is not a de Polignac number, because 189378053 - 2⁶ = 189377989 is a prime.

It is a super-3 number, since 3×189378053³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 189377995 and 189378013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189378353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94689026 + 94689027.

It is an arithmetic number, because the mean of its divisors is an integer number (94689027).

Almost surely, 2^189378053 is an apocalyptic number.

It is an amenable number.

189378053 is a deficient number, since it is larger than the sum of its proper divisors (1).

189378053 is an equidigital number, since it uses as much as digits as its factorization.

189378053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 189378053 is about 13761.4698706207. The cubic root of 189378053 is about 574.2617398654.

The spelling of 189378053 in words is "one hundred eighty-nine million, three hundred seventy-eight thousand, fifty-three".