197320151 has 8 divisors (see below), whose sum is σ = 235313664. Its totient is φ = 161777880.

The previous prime is 197320129. The next prime is 197320169. The reversal of 197320151 is 151023791.

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 197320151 - 2¹⁸ = 197058007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197320121) 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, 612635 + ... + 612956.

It is an arithmetic number, because the mean of its divisors is an integer number (29414208).

Almost surely, 2^197320151 is an apocalyptic number.

197320151 is a deficient number, since it is larger than the sum of its proper divisors (37993513).

197320151 is a wasteful number, since it uses less digits than its factorization.

197320151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225621.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 197320151 is about 14047.0691249100. The cubic root of 197320151 is about 582.1798185128.

The spelling of 197320151 in words is "one hundred ninety-seven million, three hundred twenty thousand, one hundred fifty-one".