197930079448154 has 8 divisors (see below), whose sum is σ = 296896435867668. Its totient is φ = 98964600825600.

The previous prime is 197930079448133. The next prime is 197930079448201. The reversal of 197930079448154 is 451844970039791.

It can be written as a sum of positive squares in 2 ways, for example, as 134298778900225 + 63631300547929 = 11588735^2 + 7976923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218885237 + ... + 219787640.

Almost surely, 2^{197930079448154} is an apocalyptic number.

197930079448154 is a deficient number, since it is larger than the sum of its proper divisors (98966356419514).

197930079448154 is a wasteful number, since it uses less digits than its factorization.

197930079448154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438898480.

The product of its (nonzero) digits is 274337280, while the sum is 71.

The spelling of 197930079448154 in words is "one hundred ninety-seven trillion, nine hundred thirty billion, seventy-nine million, four hundred forty-eight thousand, one hundred fifty-four".