197841870 has 96 divisors (see below), whose sum is σ = 546324480. Its totient is φ = 49533120.

The previous prime is 197841863. The next prime is 197841881. The reversal of 197841870 is 78148791.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216715 + ... + 217625.

It is an arithmetic number, because the mean of its divisors is an integer number (5690880).

Almost surely, 2^197841870 is an apocalyptic number.

197841870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 197841870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273162240).

197841870 is an abundant number, since it is smaller than the sum of its proper divisors (348482610).

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

197841870 is a wasteful number, since it uses less digits than its factorization.

197841870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 197841870 is about 14065.6272522771. The cubic root of 197841870 is about 582.6924658869.

The spelling of 197841870 in words is "one hundred ninety-seven million, eight hundred forty-one thousand, eight hundred seventy".