197953245 has 24 divisors (see below), whose sum is σ = 392136576. Its totient is φ = 90492768.

The previous prime is 197953243. The next prime is 197953339. The reversal of 197953245 is 542359791.

It is a happy number.

197953245 is a `hidden beast` number, since 1 + 9 + 79 + 532 + 45 = 666.

It is not a de Polignac number, because 197953245 - 2¹ = 197953243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 197953245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197953243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313897 + ... + 314526.

It is an arithmetic number, because the mean of its divisors is an integer number (16339024).

Almost surely, 2^197953245 is an apocalyptic number.

197953245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197953245 is a deficient number, since it is larger than the sum of its proper divisors (194183331).

197953245 is a wasteful number, since it uses less digits than its factorization.

197953245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628441 (or 628438 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 197953245 is about 14069.5858147992. The cubic root of 197953245 is about 582.8017875373.

The spelling of 197953245 in words is "one hundred ninety-seven million, nine hundred fifty-three thousand, two hundred forty-five".