186999164356 has 9 divisors (see below), whose sum is σ = 327250051149. Its totient is φ = 93499149744.

The previous prime is 186999164333. The next prime is 186999164369. The reversal of 186999164356 is 653461999681.

The square root of 186999164356 is 432434.

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., 159448476100 + 27550688256 = 399310^2 + 165984^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 186999164291 and 186999164300.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 756760 + ... + 972976.

Almost surely, 2^186999164356 is an apocalyptic number.

186999164356 is the 432434-th square number.

It is an amenable number.

186999164356 is a deficient number, since it is larger than the sum of its proper divisors (140250886793).

186999164356 is an frugal number, since it uses more digits than its factorization.

186999164356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432438 (or 216219 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 67.

The spelling of 186999164356 in words is "one hundred eighty-six billion, nine hundred ninety-nine million, one hundred sixty-four thousand, three hundred fifty-six".