197376981 has 8 divisors (see below), whose sum is σ = 270282144. Its totient is φ = 128028240.

The previous prime is 197376979. The next prime is 197377003. The reversal of 197376981 is 189673791.

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

It is not a de Polignac number, because 197376981 - 2¹ = 197376979 is a prime.

It is a super-2 number, since 2×197376981² = 77915345257348722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197376901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888975 + ... + 889196.

It is an arithmetic number, because the mean of its divisors is an integer number (33785268).

Almost surely, 2^197376981 is an apocalyptic number.

It is an amenable number.

197376981 is a deficient number, since it is larger than the sum of its proper divisors (72905163).

197376981 is a wasteful number, since it uses less digits than its factorization.

197376981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778211.

The product of its digits is 571536, while the sum is 51.

The square root of 197376981 is about 14049.0918211819. The cubic root of 197376981 is about 582.2357041774.

The spelling of 197376981 in words is "one hundred ninety-seven million, three hundred seventy-six thousand, nine hundred eighty-one".