197195649 has 12 divisors (see below), whose sum is σ = 305854704. Its totient is φ = 112683144.

The previous prime is 197195639. The next prime is 197195653. The reversal of 197195649 is 946591791.

197195649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 197195649 - 2⁷ = 197195521 is a prime.

It is a super-3 number, since 3×197195649³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (197195639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670587 + ... + 670880.

It is an arithmetic number, because the mean of its divisors is an integer number (25487892).

Almost surely, 2^197195649 is an apocalyptic number.

It is an amenable number.

197195649 is a deficient number, since it is larger than the sum of its proper divisors (108659055).

197195649 is a wasteful number, since it uses less digits than its factorization.

197195649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341484 (or 1341477 counting only the distinct ones).

The product of its digits is 612360, while the sum is 51.

The square root of 197195649 is about 14042.6368250411. The cubic root of 197195649 is about 582.0573478285.

The spelling of 197195649 in words is "one hundred ninety-seven million, one hundred ninety-five thousand, six hundred forty-nine".