19131960443 has 2 divisors, whose sum is σ = 19131960444. Its totient is φ = 19131960442.

The previous prime is 19131960437. The next prime is 19131960461. The reversal of 19131960443 is 34406913191.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19131960443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19131960443.

It is not a weakly prime, because it can be changed into another prime (19131960143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9565980221 + 9565980222.

It is an arithmetic number, because the mean of its divisors is an integer number (9565980222).

Almost surely, 2^19131960443 is an apocalyptic number.

19131960443 is a deficient number, since it is larger than the sum of its proper divisors (1).

19131960443 is an equidigital number, since it uses as much as digits as its factorization.

19131960443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The spelling of 19131960443 in words is "nineteen billion, one hundred thirty-one million, nine hundred sixty thousand, four hundred forty-three".