2187089387 has 8 divisors (see below), whose sum is σ = 2501571072. Its totient is φ = 1873117800.

The previous prime is 2187089381. The next prime is 2187089407. The reversal of 2187089387 is 7839807812.

2187089387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2187089387 - 2⁴ = 2187089371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2187089381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118289 + ... + 135522.

It is an arithmetic number, because the mean of its divisors is an integer number (312696384).

Almost surely, 2^2187089387 is an apocalyptic number.

2187089387 is a deficient number, since it is larger than the sum of its proper divisors (314481685).

2187089387 is a wasteful number, since it uses less digits than its factorization.

2187089387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255049.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 2187089387 is about 46766.3274910485. The cubic root of 2187089387 is about 1298.0422973104.

The spelling of 2187089387 in words is "two billion, one hundred eighty-seven million, eighty-nine thousand, three hundred eighty-seven".