1940419590997 has 2 divisors, whose sum is σ = 1940419590998. Its totient is φ = 1940419590996.

The previous prime is 1940419590961. The next prime is 1940419591001. The reversal of 1940419590997 is 7990959140491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1105917243876 + 834502347121 = 1051626^2 + 913511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940419590997 - 2¹⁹ = 1940419066709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940419590947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970209795498 + 970209795499.

It is an arithmetic number, because the mean of its divisors is an integer number (970209795499).

Almost surely, 2^{1940419590997} is an apocalyptic number.

It is an amenable number.

1940419590997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940419590997 is an equidigital number, since it uses as much as digits as its factorization.

1940419590997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33067440, while the sum is 67.

The spelling of 1940419590997 in words is "one trillion, nine hundred forty billion, four hundred nineteen million, five hundred ninety thousand, nine hundred ninety-seven".