19134887 has 2 divisors, whose sum is σ = 19134888. Its totient is φ = 19134886.

The previous prime is 19134853. The next prime is 19134889. The reversal of 19134887 is 78843191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19134887 - 2⁸ = 19134631 is a prime.

It is a super-2 number, since 2×19134887² = 732287801005538, which contains 22 as substring.

Together with 19134889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19134889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9567443 + 9567444.

It is an arithmetic number, because the mean of its divisors is an integer number (9567444).

Almost surely, 2^19134887 is an apocalyptic number.

19134887 is a deficient number, since it is larger than the sum of its proper divisors (1).

19134887 is an equidigital number, since it uses as much as digits as its factorization.

19134887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 19134887 is about 4374.3441794171. The cubic root of 19134887 is about 267.4701372900.

The spelling of 19134887 in words is "nineteen million, one hundred thirty-four thousand, eight hundred eighty-seven".