193699946161 has 4 divisors (see below), whose sum is σ = 193755025012. Its totient is φ = 193644867312.

The previous prime is 193699946131. The next prime is 193699946203. The reversal of 193699946161 is 161649996391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 146857568400 + 46842377761 = 383220^2 + 216431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193699946161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 193699946093 and 193699946102.

It is not an unprimeable number, because it can be changed into a prime (193699946131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27534150 + ... + 27541183.

It is an arithmetic number, because the mean of its divisors is an integer number (48438756253).

Almost surely, 2^193699946161 is an apocalyptic number.

It is an amenable number.

193699946161 is a deficient number, since it is larger than the sum of its proper divisors (55078851).

193699946161 is an equidigital number, since it uses as much as digits as its factorization.

193699946161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55078850.

The product of its digits is 17006112, while the sum is 64.

The spelling of 193699946161 in words is "one hundred ninety-three billion, six hundred ninety-nine million, nine hundred forty-six thousand, one hundred sixty-one".