197590918144 has 99 divisors (see below), whose sum is σ = 409934657977. Its totient is φ = 95189577728.

The previous prime is 197590918123. The next prime is 197590918159. The reversal of 197590918144 is 441819095791.

The square root of 197590918144 is 444512.

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., 103611884544 + 93979033600 = 321888^2 + 306560^2 .

It is a super-4 number, since 4×197590918144⁴ (a number of 46 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 412506897 + ... + 412507375.

Almost surely, 2^197590918144 is an apocalyptic number.

197590918144 is the 444512-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197590918144

197590918144 is an abundant number, since it is smaller than the sum of its proper divisors (212343739833).

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

197590918144 is an frugal number, since it uses more digits than its factorization.

197590918144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 58.

The spelling of 197590918144 in words is "one hundred ninety-seven billion, five hundred ninety million, nine hundred eighteen thousand, one hundred forty-four".