19441251457 has 2 divisors, whose sum is σ = 19441251458. Its totient is φ = 19441251456.

The previous prime is 19441251419. The next prime is 19441251463. The reversal of 19441251457 is 75415214491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15611003136 + 3830248321 = 124944^2 + 61889^2 .

It is a cyclic number.

It is not a de Polignac number, because 19441251457 - 2⁷ = 19441251329 is a prime.

It is not a weakly prime, because it can be changed into another prime (19441251407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9720625728 + 9720625729.

It is an arithmetic number, because the mean of its divisors is an integer number (9720625729).

Almost surely, 2^19441251457 is an apocalyptic number.

It is an amenable number.

19441251457 is a deficient number, since it is larger than the sum of its proper divisors (1).

19441251457 is an equidigital number, since it uses as much as digits as its factorization.

19441251457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The spelling of 19441251457 in words is "nineteen billion, four hundred forty-one million, two hundred fifty-one thousand, four hundred fifty-seven".