1945392799111 has 2 divisors, whose sum is σ = 1945392799112. Its totient is φ = 1945392799110.

The previous prime is 1945392799057. The next prime is 1945392799159. The reversal of 1945392799111 is 1119972935491.

It is a strong prime.

It is an emirp because it is prime and its reverse (1119972935491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1945392799111 - 2¹⁷ = 1945392668039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1945392799111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1945392709111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972696399555 + 972696399556.

It is an arithmetic number, because the mean of its divisors is an integer number (972696399556).

Almost surely, 2^{1945392799111} is an apocalyptic number.

1945392799111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945392799111 is an equidigital number, since it uses as much as digits as its factorization.

1945392799111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5511240, while the sum is 61.

The spelling of 1945392799111 in words is "one trillion, nine hundred forty-five billion, three hundred ninety-two million, seven hundred ninety-nine thousand, one hundred eleven".