197918437832 has 8 divisors (see below), whose sum is σ = 371097070950. Its totient is φ = 98959218912.

The previous prime is 197918437831. The next prime is 197918437883. The reversal of 197918437832 is 238734819791.

197918437832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 160998352516 + 36920085316 = 401246^2 + 192146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (197918437831) 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 as a sum of consecutive naturals, namely, 12369902357 + ... + 12369902372.

Almost surely, 2^197918437832 is an apocalyptic number.

It is an amenable number.

197918437832 is a deficient number, since it is larger than the sum of its proper divisors (173178633118).

197918437832 is a wasteful number, since it uses less digits than its factorization.

197918437832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24739804735 (or 24739804731 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 62.

The spelling of 197918437832 in words is "one hundred ninety-seven billion, nine hundred eighteen million, four hundred thirty-seven thousand, eight hundred thirty-two".