193957345 has 8 divisors (see below), whose sum is σ = 233349480. Its totient is φ = 154765440.

The previous prime is 193957333. The next prime is 193957349. The reversal of 193957345 is 543759391.

It can be written as a sum of positive squares in 4 ways, for example, as 3268864 + 190688481 = 1808^2 + 13809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 193957345 - 2⁷ = 193957217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 193957295 and 193957304.

It is not an unprimeable number, because it can be changed into a prime (193957349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47916 + ... + 51805.

It is an arithmetic number, because the mean of its divisors is an integer number (29168685).

Almost surely, 2^193957345 is an apocalyptic number.

It is an amenable number.

193957345 is a deficient number, since it is larger than the sum of its proper divisors (39392135).

193957345 is an equidigital number, since it uses as much as digits as its factorization.

193957345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100115.

The product of its digits is 510300, while the sum is 46.

The square root of 193957345 is about 13926.8569677440. The cubic root of 193957345 is about 578.8536065869.

The spelling of 193957345 in words is "one hundred ninety-three million, nine hundred fifty-seven thousand, three hundred forty-five".