197360168491 has 16 divisors (see below), whose sum is σ = 208909994400. Its totient is φ = 185929267968.

The previous prime is 197360168477. The next prime is 197360168557. The reversal of 197360168491 is 194861063791.

It is a cyclic number.

It is not a de Polignac number, because 197360168491 - 2¹⁷ = 197360037419 is a prime.

It is a super-2 number, since 2×197360168491² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197360168591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2642031 + ... + 2715703.

It is an arithmetic number, because the mean of its divisors is an integer number (13056874650).

Almost surely, 2^197360168491 is an apocalyptic number.

197360168491 is a deficient number, since it is larger than the sum of its proper divisors (11549825909).

197360168491 is a wasteful number, since it uses less digits than its factorization.

197360168491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74478.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 197360168491 in words is "one hundred ninety-seven billion, three hundred sixty million, one hundred sixty-eight thousand, four hundred ninety-one".