188819797156 has 27 divisors (see below), whose sum is σ = 332680855297. Its totient is φ = 93772437200.

The previous prime is 188819797091. The next prime is 188819797217. The reversal of 188819797156 is 651797918881.

The square root of 188819797156 is 434534.

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., 290157156 + 188529640000 = 17034^2 + 434200^2 .

It is a Duffinian number.

Its product of digits (60963840) is a multiple of the sum of its prime divisors (1470).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 145133706 + ... + 145135006.

Almost surely, 2^188819797156 is an apocalyptic number.

188819797156 is the 434534-th square number.

It is an amenable number.

188819797156 is a deficient number, since it is larger than the sum of its proper divisors (143861058141).

188819797156 is an frugal number, since it uses more digits than its factorization.

188819797156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 1470 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 70.

The spelling of 188819797156 in words is "one hundred eighty-eight billion, eight hundred nineteen million, seven hundred ninety-seven thousand, one hundred fifty-six".