197649877628 has 36 divisors (see below), whose sum is σ = 403128216792. Its totient is φ = 84545082720.

The previous prime is 197649877619. The next prime is 197649877631. The reversal of 197649877628 is 826778946791.

197649877628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 861563 + ... + 1066578.

It is an arithmetic number, because the mean of its divisors is an integer number (11198006022).

Almost surely, 2^197649877628 is an apocalyptic number.

It is an amenable number.

197649877628 is an abundant number, since it is smaller than the sum of its proper divisors (205478339164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197649877628 is a wasteful number, since it uses less digits than its factorization.

197649877628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928682 (or 1928673 counting only the distinct ones).

The product of its digits is 512096256, while the sum is 74.

The spelling of 197649877628 in words is "one hundred ninety-seven billion, six hundred forty-nine million, eight hundred seventy-seven thousand, six hundred twenty-eight".