197938071801 has 6 divisors (see below), whose sum is σ = 285910548170. Its totient is φ = 131958714528.

The previous prime is 197938071743. The next prime is 197938071823. The reversal of 197938071801 is 108170839791.

197938071801 is a `hidden beast` number, since 19 + 79 + 380 + 7 + 180 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 111254935401 + 86683136400 = 333549^2 + 294420^2 .

It is not a de Polignac number, because 197938071801 - 2¹⁰ = 197938070777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197938071871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10996559536 + ... + 10996559553.

Almost surely, 2^197938071801 is an apocalyptic number.

It is an amenable number.

197938071801 is a deficient number, since it is larger than the sum of its proper divisors (87972476369).

197938071801 is a wasteful number, since it uses less digits than its factorization.

197938071801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21993119095 (or 21993119092 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 54.

The spelling of 197938071801 in words is "one hundred ninety-seven billion, nine hundred thirty-eight million, seventy-one thousand, eight hundred one".