197198156916 has 36 divisors (see below), whose sum is σ = 524708548000. Its totient is φ = 62273101968.

The previous prime is 197198156867. The next prime is 197198156923. The reversal of 197198156916 is 619651891791.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×197198156916² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144150016 + ... + 144151383.

Almost surely, 2^197198156916 is an apocalyptic number.

It is an amenable number.

197198156916 is an abundant number, since it is smaller than the sum of its proper divisors (327510391084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197198156916 is a wasteful number, since it uses less digits than its factorization.

197198156916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288301428 (or 288301423 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 63.

The spelling of 197198156916 in words is "one hundred ninety-seven billion, one hundred ninety-eight million, one hundred fifty-six thousand, nine hundred sixteen".