197116858 has 16 divisors (see below), whose sum is σ = 302364576. Its totient is φ = 96342480.

The previous prime is 197116841. The next prime is 197116891. The reversal of 197116858 is 858611791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26713 + ... + 33283.

It is an arithmetic number, because the mean of its divisors is an integer number (18897786).

Almost surely, 2^197116858 is an apocalyptic number.

197116858 is a deficient number, since it is larger than the sum of its proper divisors (105247718).

197116858 is a wasteful number, since it uses less digits than its factorization.

197116858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909.

The product of its digits is 120960, while the sum is 46.

The square root of 197116858 is about 14039.8311243405. The cubic root of 197116858 is about 581.9798157090.

It can be divided in two parts, 19711 and 6858, that added together give a square (26569 = 163²).

The spelling of 197116858 in words is "one hundred ninety-seven million, one hundred sixteen thousand, eight hundred fifty-eight".