2187390234 has 8 divisors (see below), whose sum is σ = 4374780480. Its totient is φ = 729130076.

The previous prime is 2187390211. The next prime is 2187390259. The reversal of 2187390234 is 4320937812.

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

2187390234 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2187390192 and 2187390201.

It is an unprimeable number.

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, 182282514 + ... + 182282525.

It is an arithmetic number, because the mean of its divisors is an integer number (546847560).

Almost surely, 2^2187390234 is an apocalyptic number.

2187390234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2187390234 is a wasteful number, since it uses less digits than its factorization.

2187390234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364565044.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 2187390234 is about 46769.5438720542. The cubic root of 2187390234 is about 1298.1018123641.

The spelling of 2187390234 in words is "two billion, one hundred eighty-seven million, three hundred ninety thousand, two hundred thirty-four".