19157129 has 2 divisors, whose sum is σ = 19157130. Its totient is φ = 19157128.

The previous prime is 19157093. The next prime is 19157141. The reversal of 19157129 is 92175191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 7011904 = 3485^2 + 2648^2 .

It is a cyclic number.

It is not a de Polignac number, because 19157129 - 2⁸ = 19156873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19157189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9578564 + 9578565.

It is an arithmetic number, because the mean of its divisors is an integer number (9578565).

Almost surely, 2^19157129 is an apocalyptic number.

It is an amenable number.

19157129 is a deficient number, since it is larger than the sum of its proper divisors (1).

19157129 is an equidigital number, since it uses as much as digits as its factorization.

19157129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 35.

The square root of 19157129 is about 4376.8857650160. The cubic root of 19157129 is about 267.5737310949.

The spelling of 19157129 in words is "nineteen million, one hundred fifty-seven thousand, one hundred twenty-nine".