197768141 has 4 divisors (see below), whose sum is σ = 197877984. Its totient is φ = 197658300.

The previous prime is 197768119. The next prime is 197768213. The reversal of 197768141 is 141867791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 141867791 = 13 ⋅10912907.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197768141 is a prime.

It is a super-2 number, since 2×197768141² = 78224475189191762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197768092 and 197768101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197768101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52175 + ... + 55836.

It is an arithmetic number, because the mean of its divisors is an integer number (49469496).

Almost surely, 2^197768141 is an apocalyptic number.

It is an amenable number.

197768141 is a deficient number, since it is larger than the sum of its proper divisors (109843).

197768141 is a wasteful number, since it uses less digits than its factorization.

197768141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109842.

The product of its digits is 84672, while the sum is 44.

The square root of 197768141 is about 14063.0061153368. The cubic root of 197768141 is about 582.6200736094.

The spelling of 197768141 in words is "one hundred ninety-seven million, seven hundred sixty-eight thousand, one hundred forty-one".