19045157 has 2 divisors, whose sum is σ = 19045158. Its totient is φ = 19045156.

The previous prime is 19045153. The next prime is 19045207. The reversal of 19045157 is 75154091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18395521 + 649636 = 4289^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 19045157 - 2² = 19045153 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 (19045153) 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, 9522578 + 9522579.

It is an arithmetic number, because the mean of its divisors is an integer number (9522579).

Almost surely, 2^19045157 is an apocalyptic number.

It is an amenable number.

19045157 is a deficient number, since it is larger than the sum of its proper divisors (1).

19045157 is an equidigital number, since it uses as much as digits as its factorization.

19045157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 19045157 is about 4364.0757326151. The cubic root of 19045157 is about 267.0513958862.

The spelling of 19045157 in words is "nineteen million, forty-five thousand, one hundred fifty-seven".