19025513489 has 2 divisors, whose sum is σ = 19025513490. Its totient is φ = 19025513488.

The previous prime is 19025513483. The next prime is 19025513491. The reversal of 19025513489 is 98431552091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17152355089 + 1873158400 = 130967^2 + 43280^2 .

It is a cyclic number.

It is not a de Polignac number, because 19025513489 - 2¹⁶ = 19025447953 is a prime.

Together with 19025513491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19025513483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9512756744 + 9512756745.

It is an arithmetic number, because the mean of its divisors is an integer number (9512756745).

Almost surely, 2^19025513489 is an apocalyptic number.

It is an amenable number.

19025513489 is a deficient number, since it is larger than the sum of its proper divisors (1).

19025513489 is an equidigital number, since it uses as much as digits as its factorization.

19025513489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 19025513489 in words is "nineteen billion, twenty-five million, five hundred thirteen thousand, four hundred eighty-nine".