2187648819 has 12 divisors (see below), whose sum is σ = 3160354392. Its totient is φ = 1458240000.

The previous prime is 2187648811. The next prime is 2187648823. The reversal of 2187648819 is 9188467812.

2187648819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2187648819 - 2³ = 2187648811 is a prime.

It is a super-2 number, since 2×2187648819² = 9571614710544189522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2187648811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100339 + ... + 120179.

It is an arithmetic number, because the mean of its divisors is an integer number (263362866).

Almost surely, 2^2187648819 is an apocalyptic number.

2187648819 is a deficient number, since it is larger than the sum of its proper divisors (972705573).

2187648819 is a wasteful number, since it uses less digits than its factorization.

2187648819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32098 (or 32095 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 2187648819 is about 46772.3082496470. The cubic root of 2187648819 is about 1298.1529625773.

The spelling of 2187648819 in words is "two billion, one hundred eighty-seven million, six hundred forty-eight thousand, eight hundred nineteen".