193375081 has 2 divisors, whose sum is σ = 193375082. Its totient is φ = 193375080.

The previous prime is 193375079. The next prime is 193375087. The reversal of 193375081 is 180573391.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160782400 + 32592681 = 12680^2 + 5709^2 .

It is a cyclic number.

It is not a de Polignac number, because 193375081 - 2¹ = 193375079 is a prime.

It is a super-2 number, since 2×193375081² = 74787843903513122, which contains 22 as substring.

Together with 193375079, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 193375081.

It is not a weakly prime, because it can be changed into another prime (193375087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96687540 + 96687541.

It is an arithmetic number, because the mean of its divisors is an integer number (96687541).

Almost surely, 2^193375081 is an apocalyptic number.

It is an amenable number.

193375081 is a deficient number, since it is larger than the sum of its proper divisors (1).

193375081 is an equidigital number, since it uses as much as digits as its factorization.

193375081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 193375081 is about 13905.9368975988. The cubic root of 193375081 is about 578.2737824463.

The spelling of 193375081 in words is "one hundred ninety-three million, three hundred seventy-five thousand, eighty-one".