188196321856 has 63 divisors (see below), whose sum is σ = 376696100937. Its totient is φ = 93287792640.

The previous prime is 188196321799. The next prime is 188196321857. The reversal of 188196321856 is 658123691881.

It is a happy number.

The square root of 188196321856 is 433816.

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., 185278593600 + 2917728256 = 430440^2 + 54016^2 .

It is a super-3 number, since 3×188196321856³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 188196321856.

It is not an unprimeable number, because it can be changed into a prime (188196321857) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 732281280 + ... + 732281536.

Almost surely, 2^188196321856 is an apocalyptic number.

188196321856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

188196321856 is the 433816-th square number.

It is an amenable number.

188196321856 is an abundant number, since it is smaller than the sum of its proper divisors (188499779081).

188196321856 is an frugal number, since it uses more digits than its factorization.

188196321856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 470 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 58.

The spelling of 188196321856 in words is "one hundred eighty-eight billion, one hundred ninety-six million, three hundred twenty-one thousand, eight hundred fifty-six".