197440955183 has 4 divisors (see below), whose sum is σ = 197577028968. Its totient is φ = 197304881400.

The previous prime is 197440955177. The next prime is 197440955209. The reversal of 197440955183 is 381559044791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 197440955183 - 2⁴ = 197440955167 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 (197440955143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68034716 + ... + 68037617.

It is an arithmetic number, because the mean of its divisors is an integer number (49394257242).

Almost surely, 2^197440955183 is an apocalyptic number.

197440955183 is a deficient number, since it is larger than the sum of its proper divisors (136073785).

197440955183 is a wasteful number, since it uses less digits than its factorization.

197440955183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136073784.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 197440955183 in words is "one hundred ninety-seven billion, four hundred forty million, nine hundred fifty-five thousand, one hundred eighty-three".