197089451 has 8 divisors (see below), whose sum is σ = 223421520. Its totient is φ = 172353312.

The previous prime is 197089447. The next prime is 197089469. The reversal of 197089451 is 154980791.

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

It is a cyclic number.

It is not a de Polignac number, because 197089451 - 2² = 197089447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197089421) 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, 398720 + ... + 399213.

It is an arithmetic number, because the mean of its divisors is an integer number (27927690).

Almost surely, 2^197089451 is an apocalyptic number.

197089451 is a deficient number, since it is larger than the sum of its proper divisors (26332069).

197089451 is a wasteful number, since it uses less digits than its factorization.

197089451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797965.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 197089451 is about 14038.8550459074. The cubic root of 197089451 is about 581.9528417602.

The spelling of 197089451 in words is "one hundred ninety-seven million, eighty-nine thousand, four hundred fifty-one".