1287190233419 has 2 divisors, whose sum is σ = 1287190233420. Its totient is φ = 1287190233418.

The previous prime is 1287190233377. The next prime is 1287190233541. The reversal of 1287190233419 is 9143320917821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1287190233419 is a prime.

It is a super-2 number, since 2×1287190233419² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1287190233919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643595116709 + 643595116710.

It is an arithmetic number, because the mean of its divisors is an integer number (643595116710).

Almost surely, 2^{1287190233419} is an apocalyptic number.

1287190233419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287190233419 is an equidigital number, since it uses as much as digits as its factorization.

1287190233419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 1287190233419 in words is "one trillion, two hundred eighty-seven billion, one hundred ninety million, two hundred thirty-three thousand, four hundred nineteen".