1988813334719 has 2 divisors, whose sum is σ = 1988813334720. Its totient is φ = 1988813334718.

The previous prime is 1988813334637. The next prime is 1988813334733. The reversal of 1988813334719 is 9174333188891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1988813334719 - 2²⁰ = 1988812286143 is a prime.

It is a super-2 number, since 2×1988813334719² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988813334799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994406667359 + 994406667360.

It is an arithmetic number, because the mean of its divisors is an integer number (994406667360).

Almost surely, 2^{1988813334719} is an apocalyptic number.

1988813334719 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988813334719 is an equidigital number, since it uses as much as digits as its factorization.

1988813334719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 65.

The spelling of 1988813334719 in words is "one trillion, nine hundred eighty-eight billion, eight hundred thirteen million, three hundred thirty-four thousand, seven hundred nineteen".