193040953 has 4 divisors (see below), whose sum is σ = 220618240. Its totient is φ = 165463668.

The previous prime is 193040941. The next prime is 193040957. The reversal of 193040953 is 359040391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193040953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193040957) 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, 13788633 + ... + 13788646.

It is an arithmetic number, because the mean of its divisors is an integer number (55154560).

Almost surely, 2^193040953 is an apocalyptic number.

It is an amenable number.

193040953 is a deficient number, since it is larger than the sum of its proper divisors (27577287).

193040953 is an equidigital number, since it uses as much as digits as its factorization.

193040953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27577286.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 193040953 is about 13893.9178419911. The cubic root of 193040953 is about 577.9405287965.

The spelling of 193040953 in words is "one hundred ninety-three million, forty thousand, nine hundred fifty-three".