189103157 has 2 divisors, whose sum is σ = 189103158. Its totient is φ = 189103156.

The previous prime is 189103141. The next prime is 189103163. The reversal of 189103157 is 751301981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181737361 + 7365796 = 13481^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 189103157 - 2⁴ = 189103141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189103177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94551578 + 94551579.

It is an arithmetic number, because the mean of its divisors is an integer number (94551579).

Almost surely, 2^189103157 is an apocalyptic number.

It is an amenable number.

189103157 is a deficient number, since it is larger than the sum of its proper divisors (1).

189103157 is an equidigital number, since it uses as much as digits as its factorization.

189103157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 189103157 is about 13751.4783568895. The cubic root of 189103157 is about 573.9837444356.

The spelling of 189103157 in words is "one hundred eighty-nine million, one hundred three thousand, one hundred fifty-seven".