2187938148 has 48 divisors (see below), whose sum is σ = 5896908864. Its totient is φ = 624010240.

The previous prime is 2187938117. The next prime is 2187938153. The reversal of 2187938148 is 8418397812.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 2187938148.

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, 485265 + ... + 489752.

It is an arithmetic number, because the mean of its divisors is an integer number (122852268).

Almost surely, 2^2187938148 is an apocalyptic number.

It is an amenable number.

2187938148 is an abundant number, since it is smaller than the sum of its proper divisors (3708970716).

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

2187938148 is a wasteful number, since it uses less digits than its factorization.

2187938148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975052 (or 975050 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 2187938148 is about 46775.4010992958. The cubic root of 2187938148 is about 1298.2101894257.

The spelling of 2187938148 in words is "two billion, one hundred eighty-seven million, nine hundred thirty-eight thousand, one hundred forty-eight".