1948926996491 has 2 divisors, whose sum is σ = 1948926996492. Its totient is φ = 1948926996490.

The previous prime is 1948926996479. The next prime is 1948926996547. The reversal of 1948926996491 is 1946996298491.

It is a weak prime.

It is an emirp because it is prime and its reverse (1946996298491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1948926996491 - 2¹⁴ = 1948926980107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1948926996461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974463498245 + 974463498246.

It is an arithmetic number, because the mean of its divisors is an integer number (974463498246).

Almost surely, 2^{1948926996491} is an apocalyptic number.

1948926996491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948926996491 is an equidigital number, since it uses as much as digits as its factorization.

1948926996491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544195584, while the sum is 77.

The spelling of 1948926996491 in words is "one trillion, nine hundred forty-eight billion, nine hundred twenty-six million, nine hundred ninety-six thousand, four hundred ninety-one".