197719380 has 168 divisors, whose sum is σ = 634604544. Its totient is φ = 51710400.

The previous prime is 197719369. The next prime is 197719381. The reversal of 197719380 is 83917791.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197719381) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1035085 + ... + 1035275.

It is an arithmetic number, because the mean of its divisors is an integer number (3777408).

Almost surely, 2^197719380 is an apocalyptic number.

197719380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197719380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317302272).

197719380 is an abundant number, since it is smaller than the sum of its proper divisors (436885164).

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

197719380 is a wasteful number, since it uses less digits than its factorization.

197719380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The square root of 197719380 is about 14061.2723464130. The cubic root of 197719380 is about 582.5721867718.

The spelling of 197719380 in words is "one hundred ninety-seven million, seven hundred nineteen thousand, three hundred eighty".