197385930 has 128 divisors (see below), whose sum is σ = 605928960. Its totient is φ = 44789760.

The previous prime is 197385917. The next prime is 197385949. The reversal of 197385930 is 39583791.

It is a happy number.

It is a super-2 number, since 2×197385930² = 77922410723929800, which contains 22 as substring.

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

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 63 ways as a sum of consecutive naturals, for example, 341802 + ... + 342378.

It is an arithmetic number, because the mean of its divisors is an integer number (4733820).

Almost surely, 2^197385930 is an apocalyptic number.

197385930 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 197385930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302964480).

197385930 is an abundant number, since it is smaller than the sum of its proper divisors (408543030).

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

197385930 is a wasteful number, since it uses less digits than its factorization.

197385930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 197385930 is about 14049.4103079097. The cubic root of 197385930 is about 582.2445034956.

The spelling of 197385930 in words is "one hundred ninety-seven million, three hundred eighty-five thousand, nine hundred thirty".