994929721193 has 2 divisors, whose sum is σ = 994929721194. Its totient is φ = 994929721192.

The previous prime is 994929721183. The next prime is 994929721229. The reversal of 994929721193 is 391127929499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 885684267664 + 109245453529 = 941108^2 + 330523^2 .

It is an emirp because it is prime and its reverse (391127929499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994929721193 - 2²⁴ = 994912943977 is a prime.

It is a super-2 number, since 2×994929721193² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (994929721183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497464860596 + 497464860597.

It is an arithmetic number, because the mean of its divisors is an integer number (497464860597).

Almost surely, 2^994929721193 is an apocalyptic number.

It is an amenable number.

994929721193 is a deficient number, since it is larger than the sum of its proper divisors (1).

994929721193 is an equidigital number, since it uses as much as digits as its factorization.

994929721193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19840464, while the sum is 65.

The spelling of 994929721193 in words is "nine hundred ninety-four billion, nine hundred twenty-nine million, seven hundred twenty-one thousand, one hundred ninety-three".