197330464181 has 4 divisors (see below), whose sum is σ = 197859500652. Its totient is φ = 196801427712.

The previous prime is 197330464117. The next prime is 197330464187. The reversal of 197330464181 is 181464033791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 181464033791 = 337 ⋅538468943.

It can be written as a sum of positive squares in 2 ways, for example, as 153997380625 + 43333083556 = 392425^2 + 208166^2 .

It is a cyclic number.

It is not a de Polignac number, because 197330464181 - 2⁶ = 197330464117 is a prime.

It is a super-2 number, since 2×197330464181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197330464187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264517676 + ... + 264518421.

It is an arithmetic number, because the mean of its divisors is an integer number (49464875163).

Almost surely, 2^197330464181 is an apocalyptic number.

It is an amenable number.

197330464181 is a deficient number, since it is larger than the sum of its proper divisors (529036471).

197330464181 is an equidigital number, since it uses as much as digits as its factorization.

197330464181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529036470.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 197330464181 in words is "one hundred ninety-seven billion, three hundred thirty million, four hundred sixty-four thousand, one hundred eighty-one".