2111478630 has 64 divisors (see below), whose sum is σ = 5234077440. Its totient is φ = 544731264.

The previous prime is 2111478623. The next prime is 2111478643. The reversal of 2111478630 is 368741112.

It is a junction number, because it is equal to n+sod(n) for n = 2111478591 and 2111478600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193377 + ... + 204003.

It is an arithmetic number, because the mean of its divisors is an integer number (81782460).

Almost surely, 2^2111478630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111478630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2617038720).

2111478630 is an abundant number, since it is smaller than the sum of its proper divisors (3122598810).

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

2111478630 is a wasteful number, since it uses less digits than its factorization.

2111478630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10853.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 2111478630 is about 45950.8283929681. The cubic root of 2111478630 is about 1282.9081480462.

The spelling of 2111478630 in words is "two billion, one hundred eleven million, four hundred seventy-eight thousand, six hundred thirty".