993830141917 has 2 divisors, whose sum is σ = 993830141918. Its totient is φ = 993830141916.

The previous prime is 993830141861. The next prime is 993830141987. The reversal of 993830141917 is 719141038399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909532245636 + 84297896281 = 953694^2 + 290341^2 .

It is a cyclic number.

It is not a de Polignac number, because 993830141917 - 2²⁷ = 993695924189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993830141987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496915070958 + 496915070959.

It is an arithmetic number, because the mean of its divisors is an integer number (496915070959).

Almost surely, 2^993830141917 is an apocalyptic number.

It is an amenable number.

993830141917 is a deficient number, since it is larger than the sum of its proper divisors (1).

993830141917 is an equidigital number, since it uses as much as digits as its factorization.

993830141917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 993830141917 in words is "nine hundred ninety-three billion, eight hundred thirty million, one hundred forty-one thousand, nine hundred seventeen".