196808357 has 4 divisors (see below), whose sum is σ = 196953696. Its totient is φ = 196663020.

The previous prime is 196808341. The next prime is 196808363. The reversal of 196808357 is 753808691.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 753808691 = 8543 ⋅88237.

It is a cyclic number.

It is not a de Polignac number, because 196808357 - 2⁴ = 196808341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196804357) 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, 70619 + ... + 73352.

It is an arithmetic number, because the mean of its divisors is an integer number (49238424).

Almost surely, 2^196808357 is an apocalyptic number.

It is an amenable number.

196808357 is a deficient number, since it is larger than the sum of its proper divisors (145339).

196808357 is a wasteful number, since it uses less digits than its factorization.

196808357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145338.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 196808357 is about 14028.8401872714. The cubic root of 196808357 is about 581.6760448001.

The spelling of 196808357 in words is "one hundred ninety-six million, eight hundred eight thousand, three hundred fifty-seven".