197893301904 has 135 divisors (see below), whose sum is σ = 575517356713. Its totient is φ = 65916389952.

The previous prime is 197893301839. The next prime is 197893301909. The reversal of 197893301904 is 409103398791.

It is a happy number.

The square root of 197893301904 is 444852.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 195593907600 + 2299394304 = 442260^2 + 47952^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197893301909) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 144131362 + ... + 144132734.

Almost surely, 2^197893301904 is an apocalyptic number.

197893301904 is the 444852-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197893301904

197893301904 is an abundant number, since it is smaller than the sum of its proper divisors (377624054809).

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

197893301904 is an frugal number, since it uses more digits than its factorization.

197893301904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 197893301904 in words is "one hundred ninety-seven billion, eight hundred ninety-three million, three hundred one thousand, nine hundred four".