2187654630 has 64 divisors (see below), whose sum is σ = 6146800128. Its totient is φ = 487837440.

The previous prime is 2187654619. The next prime is 2187654631. The reversal of 2187654630 is 364567812.

2187654630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187654631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118432 + ... + 135651.

It is an arithmetic number, because the mean of its divisors is an integer number (96043752).

Almost surely, 2^2187654630 is an apocalyptic number.

2187654630 is an abundant number, since it is smaller than the sum of its proper divisors (3959145498).

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

2187654630 is a wasteful number, since it uses less digits than its factorization.

2187654630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254141.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 2187654630 is about 46772.3703696958. The cubic root of 2187654630 is about 1298.1541119940.

The spelling of 2187654630 in words is "two billion, one hundred eighty-seven million, six hundred fifty-four thousand, six hundred thirty".