197861148 has 36 divisors (see below), whose sum is σ = 501942168. Its totient is φ = 65717280.

The previous prime is 197861141. The next prime is 197861149. The reversal of 197861148 is 841168791.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197861141) 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, 478 + ... + 19898.

It is an arithmetic number, because the mean of its divisors is an integer number (13942838).

Almost surely, 2^197861148 is an apocalyptic number.

197861148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

197861148 is an abundant number, since it is smaller than the sum of its proper divisors (304081020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197861148 is a wasteful number, since it uses less digits than its factorization.

197861148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19714 (or 19709 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 197861148 is about 14066.3125231882. The cubic root of 197861148 is about 582.7113914064.

The spelling of 197861148 in words is "one hundred ninety-seven million, eight hundred sixty-one thousand, one hundred forty-eight".