197790369 has 16 divisors (see below), whose sum is σ = 301872000. Its totient is φ = 112844160.

The previous prime is 197790349. The next prime is 197790371. The reversal of 197790369 is 963097791.

It is not a de Polignac number, because 197790369 - 2¹³ = 197782177 is a prime.

It is a super-2 number, since 2×197790369² = 78242060138312322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (197790319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6757 + ... + 21005.

It is an arithmetic number, because the mean of its divisors is an integer number (18867000).

Almost surely, 2^197790369 is an apocalyptic number.

It is an amenable number.

197790369 is a deficient number, since it is larger than the sum of its proper divisors (104081631).

197790369 is a wasteful number, since it uses less digits than its factorization.

197790369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14920.

The product of its (nonzero) digits is 642978, while the sum is 51.

The square root of 197790369 is about 14063.7963935774. The cubic root of 197790369 is about 582.6419005052.

The spelling of 197790369 in words is "one hundred ninety-seven million, seven hundred ninety thousand, three hundred sixty-nine".