2187317952 has 112 divisors (see below), whose sum is σ = 6481592320. Its totient is φ = 723292416.

The previous prime is 2187317941. The next prime is 2187317969. The reversal of 2187317952 is 2597137812.

It is a junction number, because it is equal to n+sod(n) for n = 2187317898 and 2187317907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214473 + ... + 224439.

It is an arithmetic number, because the mean of its divisors is an integer number (57871360).

Almost surely, 2^2187317952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2187317952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3240796160).

2187317952 is an abundant number, since it is smaller than the sum of its proper divisors (4294274368).

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

2187317952 is a wasteful number, since it uses less digits than its factorization.

2187317952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10115 (or 10099 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 2187317952 is about 46768.7711191988. The cubic root of 2187317952 is about 1298.0875136765.

The spelling of 2187317952 in words is "two billion, one hundred eighty-seven million, three hundred seventeen thousand, nine hundred fifty-two".