197022306887 has 4 divisors (see below), whose sum is σ = 225168350736. Its totient is φ = 168876263040.

The previous prime is 197022306883. The next prime is 197022306889. The reversal of 197022306887 is 788603220791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788603220791 = 16829 ⋅46859779.

It is a cyclic number.

It is not a de Polignac number, because 197022306887 - 2² = 197022306883 is a prime.

It is a super-2 number, since 2×197022306887² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197022306883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14073021914 + ... + 14073021927.

It is an arithmetic number, because the mean of its divisors is an integer number (56292087684).

Almost surely, 2^197022306887 is an apocalyptic number.

197022306887 is a deficient number, since it is larger than the sum of its proper divisors (28146043849).

197022306887 is an equidigital number, since it uses as much as digits as its factorization.

197022306887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28146043848.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 197022306887 in words is "one hundred ninety-seven billion, twenty-two million, three hundred six thousand, eight hundred eighty-seven".