197808793 has 16 divisors (see below), whose sum is σ = 244349056. Its totient is φ = 155934720.

The previous prime is 197808781. The next prime is 197808827. The reversal of 197808793 is 397808791.

197808793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 197808793 - 2⁵ = 197808761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197808793.

It is not an unprimeable number, because it can be changed into a prime (197808713) 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, 21913 + ... + 29593.

It is an arithmetic number, because the mean of its divisors is an integer number (15271816).

Almost surely, 2^197808793 is an apocalyptic number.

197808793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

197808793 is a deficient number, since it is larger than the sum of its proper divisors (46540263).

197808793 is a wasteful number, since it uses less digits than its factorization.

197808793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7984.

The product of its (nonzero) digits is 762048, while the sum is 52.

The square root of 197808793 is about 14064.4513934956. The cubic root of 197808793 is about 582.6599908048.

The spelling of 197808793 in words is "one hundred ninety-seven million, eight hundred eight thousand, seven hundred ninety-three".