187322764864 has 21 divisors (see below), whose sum is σ = 371725482481. Its totient is φ = 93659651200.

The previous prime is 187322764861. The next prime is 187322764883. The reversal of 187322764864 is 468467223781.

The square root of 187322764864 is 432808.

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., 147769510464 + 39553254400 = 384408^2 + 198880^2 .

It is a super-4 number, since 4×187322764864⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 187322764799 and 187322764808.

It is not an unprimeable number, because it can be changed into a prime (187322764861) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3435414 + ... + 3489514.

Almost surely, 2^187322764864 is an apocalyptic number.

187322764864 is the 432808-th square number.

It is an amenable number.

187322764864 is a deficient number, since it is larger than the sum of its proper divisors (184402717617).

187322764864 is an frugal number, since it uses more digits than its factorization.

187322764864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108214 (or 54103 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 58.

The spelling of 187322764864 in words is "one hundred eighty-seven billion, three hundred twenty-two million, seven hundred sixty-four thousand, eight hundred sixty-four".