197923449843 has 48 divisors (see below), whose sum is σ = 330543383040. Its totient is φ = 111780459648.

The previous prime is 197923449827. The next prime is 197923449851. The reversal of 197923449843 is 348944329791.

197923449843 is a `hidden beast` number, since 1 + 9 + 79 + 2 + 34 + 498 + 43 = 666.

197923449843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 197923449843 - 2⁴ = 197923449827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (197923429843) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 16181296 + ... + 16193522.

It is an arithmetic number, because the mean of its divisors is an integer number (6886320480).

Almost surely, 2^197923449843 is an apocalyptic number.

197923449843 is a deficient number, since it is larger than the sum of its proper divisors (132619933197).

197923449843 is a wasteful number, since it uses less digits than its factorization.

197923449843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15216 (or 15213 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 63.

The spelling of 197923449843 in words is "one hundred ninety-seven billion, nine hundred twenty-three million, four hundred forty-nine thousand, eight hundred forty-three".