19104157 has 2 divisors, whose sum is σ = 19104158. Its totient is φ = 19104156.

The previous prime is 19104121. The next prime is 19104161. The reversal of 19104157 is 75140191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17690436 + 1413721 = 4206^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 19104157 - 2¹⁵ = 19071389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19104257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9552078 + 9552079.

It is an arithmetic number, because the mean of its divisors is an integer number (9552079).

Almost surely, 2^19104157 is an apocalyptic number.

19104157 is the 2524-th hex number.

It is an amenable number.

19104157 is a deficient number, since it is larger than the sum of its proper divisors (1).

19104157 is an equidigital number, since it uses as much as digits as its factorization.

19104157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 19104157 is about 4370.8302414987. The cubic root of 19104157 is about 267.3268778210.

The spelling of 19104157 in words is "nineteen million, one hundred four thousand, one hundred fifty-seven".