1239622946491 has 2 divisors, whose sum is σ = 1239622946492. Its totient is φ = 1239622946490.

The previous prime is 1239622946489. The next prime is 1239622946521. The reversal of 1239622946491 is 1946492269321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1239622946491 - 2¹ = 1239622946489 is a prime.

Together with 1239622946489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1239622946461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619811473245 + 619811473246.

It is an arithmetic number, because the mean of its divisors is an integer number (619811473246).

Almost surely, 2^{1239622946491} is an apocalyptic number.

1239622946491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1239622946491 is an equidigital number, since it uses as much as digits as its factorization.

1239622946491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 58.

The spelling of 1239622946491 in words is "one trillion, two hundred thirty-nine billion, six hundred twenty-two million, nine hundred forty-six thousand, four hundred ninety-one".