19232118457 has 2 divisors, whose sum is σ = 19232118458. Its totient is φ = 19232118456.

The previous prime is 19232118407. The next prime is 19232118469. The reversal of 19232118457 is 75481123291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18761054841 + 471063616 = 136971^2 + 21704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19232118457 is a prime.

It is not a weakly prime, because it can be changed into another prime (19232118407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9616059228 + 9616059229.

It is an arithmetic number, because the mean of its divisors is an integer number (9616059229).

Almost surely, 2^19232118457 is an apocalyptic number.

It is an amenable number.

19232118457 is a deficient number, since it is larger than the sum of its proper divisors (1).

19232118457 is an equidigital number, since it uses as much as digits as its factorization.

19232118457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The spelling of 19232118457 in words is "nineteen billion, two hundred thirty-two million, one hundred eighteen thousand, four hundred fifty-seven".