1421193080819 has 2 divisors, whose sum is σ = 1421193080820. Its totient is φ = 1421193080818.

The previous prime is 1421193080777. The next prime is 1421193080833. The reversal of 1421193080819 is 9180803911241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421193080819 - 2³² = 1416898113523 is a prime.

It is a super-2 number, since 2×1421193080819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421193070819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710596540409 + 710596540410.

It is an arithmetic number, because the mean of its divisors is an integer number (710596540410).

Almost surely, 2^{1421193080819} is an apocalyptic number.

1421193080819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421193080819 is an equidigital number, since it uses as much as digits as its factorization.

1421193080819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 47.

The spelling of 1421193080819 in words is "one trillion, four hundred twenty-one billion, one hundred ninety-three million, eighty thousand, eight hundred nineteen".