2187399588196 has 9 divisors (see below), whose sum is σ = 3827954455801. Its totient is φ = 1093698315112.

The previous prime is 2187399588181. The next prime is 2187399588197. The reversal of 2187399588196 is 6918859937812.

The square root of 2187399588196 is 1478986.

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., 1768873400100 + 418526188096 = 1329990^2 + 646936^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2187399588197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2588226 + ... + 3327718.

Almost surely, 2^{2187399588196} is an apocalyptic number.

2187399588196 is the 1478986-th square number.

It is an amenable number.

2187399588196 is a deficient number, since it is larger than the sum of its proper divisors (1640554867605).

2187399588196 is an frugal number, since it uses more digits than its factorization.

2187399588196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478990 (or 739495 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 76.

The spelling of 2187399588196 in words is "two trillion, one hundred eighty-seven billion, three hundred ninety-nine million, five hundred eighty-eight thousand, one hundred ninety-six".