193694748089 has 4 divisors (see below), whose sum is σ = 193695667956. Its totient is φ = 193693828224.

The previous prime is 193694748059. The next prime is 193694748131. The reversal of 193694748089 is 980847496391.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20299125625 + 173395622464 = 142475^2 + 416408^2 .

It is a cyclic number.

It is not a de Polignac number, because 193694748089 - 2³⁶ = 124975271353 is a prime.

It is a super-2 number, since 2×193694748089² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193694748059) 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, 29597 + ... + 623109.

It is an arithmetic number, because the mean of its divisors is an integer number (48423916989).

Almost surely, 2^193694748089 is an apocalyptic number.

It is an amenable number.

193694748089 is a deficient number, since it is larger than the sum of its proper divisors (919867).

193694748089 is an equidigital number, since it uses as much as digits as its factorization.

193694748089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919866.

The product of its (nonzero) digits is 94058496, while the sum is 68.

The spelling of 193694748089 in words is "one hundred ninety-three billion, six hundred ninety-four million, seven hundred forty-eight thousand, eighty-nine".