2187071372 has 12 divisors (see below), whose sum is σ = 3865270416. Its totient is φ = 1082708400.

The previous prime is 2187071371. The next prime is 2187071401. The reversal of 2187071372 is 2731707812.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2187071371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2706368 + ... + 2707175.

It is an arithmetic number, because the mean of its divisors is an integer number (322105868).

Almost surely, 2^2187071372 is an apocalyptic number.

It is an amenable number.

2187071372 is a deficient number, since it is larger than the sum of its proper divisors (1678199044).

2187071372 is a wasteful number, since it uses less digits than its factorization.

2187071372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5413648 (or 5413646 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 2187071372 is about 46766.1348841231. The cubic root of 2187071372 is about 1298.0387333201.

The spelling of 2187071372 in words is "two billion, one hundred eighty-seven million, seventy-one thousand, three hundred seventy-two".