19104487 has 2 divisors, whose sum is σ = 19104488. Its totient is φ = 19104486.

The previous prime is 19104461. The next prime is 19104497. The reversal of 19104487 is 78440191.

It is a strong prime.

It is an emirp because it is prime and its reverse (78440191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19104487 - 2¹⁵ = 19071719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19104457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9552243 + 9552244.

It is an arithmetic number, because the mean of its divisors is an integer number (9552244).

Almost surely, 2^19104487 is an apocalyptic number.

19104487 is a deficient number, since it is larger than the sum of its proper divisors (1).

19104487 is an equidigital number, since it uses as much as digits as its factorization.

19104487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 19104487 is about 4370.8679916008. The cubic root of 19104487 is about 267.3284170560.

It can be divided in two parts, 19104 and 487, that added together give a palindrome (19591).

The spelling of 19104487 in words is "nineteen million, one hundred four thousand, four hundred eighty-seven".