196358977 has 16 divisors (see below), whose sum is σ = 212752960. Its totient is φ = 180652032.

The previous prime is 196358969. The next prime is 196358989. The reversal of 196358977 is 779853691.

It is a 3-Lehmer number, since φ(196358977) divides (196358977-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 196358977 - 2³ = 196358969 is a prime.

It is a deceptive number, since it divides R_196358976.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196358927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91873 + ... + 93985.

It is an arithmetic number, because the mean of its divisors is an integer number (13297060).

It is a Poulet number, since it divides 2^196358976-1.

Almost surely, 2^196358977 is an apocalyptic number.

It is an amenable number.

196358977 is a deficient number, since it is larger than the sum of its proper divisors (16393983).

196358977 is a wasteful number, since it uses less digits than its factorization.

196358977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272.

The product of its digits is 2857680, while the sum is 55.

The square root of 196358977 is about 14012.8147422279. The cubic root of 196358977 is about 581.2329864061.

The spelling of 196358977 in words is "one hundred ninety-six million, three hundred fifty-eight thousand, nine hundred seventy-seven".