19313282437 has 2 divisors, whose sum is σ = 19313282438. Its totient is φ = 19313282436.

The previous prime is 19313282383. The next prime is 19313282467. The reversal of 19313282437 is 73428231391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19079620641 + 233661796 = 138129^2 + 15286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19313282437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19313282393 and 19313282402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19313282467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9656641218 + 9656641219.

It is an arithmetic number, because the mean of its divisors is an integer number (9656641219).

Almost surely, 2^19313282437 is an apocalyptic number.

It is an amenable number.

19313282437 is a deficient number, since it is larger than the sum of its proper divisors (1).

19313282437 is an equidigital number, since it uses as much as digits as its factorization.

19313282437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The spelling of 19313282437 in words is "nineteen billion, three hundred thirteen million, two hundred eighty-two thousand, four hundred thirty-seven".