193198957 has 16 divisors (see below), whose sum is σ = 233735040. Its totient is φ = 156163392.

The previous prime is 193198909. The next prime is 193198963. The reversal of 193198957 is 759891391.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-193198957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193198997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2338 + ... + 19795.

It is an arithmetic number, because the mean of its divisors is an integer number (14608440).

Almost surely, 2^193198957 is an apocalyptic number.

It is an amenable number.

193198957 is a deficient number, since it is larger than the sum of its proper divisors (40536083).

193198957 is a wasteful number, since it uses less digits than its factorization.

193198957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22212.

The product of its digits is 612360, while the sum is 52.

The square root of 193198957 is about 13899.6027641080. The cubic root of 193198957 is about 578.0981672163.

The spelling of 193198957 in words is "one hundred ninety-three million, one hundred ninety-eight thousand, nine hundred fifty-seven".