197732097461 has 4 divisors (see below), whose sum is σ = 197764011372. Its totient is φ = 197700183552.

The previous prime is 197732097457. The next prime is 197732097463. The reversal of 197732097461 is 164790237791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164790237791 = 2903 ⋅56765497.

It can be written as a sum of positive squares in 2 ways, for example, as 47939102500 + 149792994961 = 218950^2 + 387031^2 .

It is a cyclic number.

It is not a de Polignac number, because 197732097461 - 2² = 197732097457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197732097397 and 197732097406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197732097463) 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, 15947660 + ... + 15960053.

It is an arithmetic number, because the mean of its divisors is an integer number (49441002843).

Almost surely, 2^197732097461 is an apocalyptic number.

It is an amenable number.

197732097461 is a deficient number, since it is larger than the sum of its proper divisors (31913911).

197732097461 is an equidigital number, since it uses as much as digits as its factorization.

197732097461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31913910.

The product of its (nonzero) digits is 4000752, while the sum is 56.

The spelling of 197732097461 in words is "one hundred ninety-seven billion, seven hundred thirty-two million, ninety-seven thousand, four hundred sixty-one".