2138789430 has 48 divisors (see below), whose sum is σ = 5563630800. Its totient is φ = 570058944.

The previous prime is 2138789423. The next prime is 2138789449. The reversal of 2138789430 is 349878312.

2138789430 is a `hidden beast` number, since 2 + 138 + 7 + 89 + 430 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224749 + ... + 234071.

It is an arithmetic number, because the mean of its divisors is an integer number (115908975).

Almost surely, 2^2138789430 is an apocalyptic number.

2138789430 is an abundant number, since it is smaller than the sum of its proper divisors (3424841370).

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

2138789430 is a wasteful number, since it uses less digits than its factorization.

2138789430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11885 (or 11882 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 2138789430 is about 46247.0477976703. The cubic root of 2138789430 is about 1288.4157042452.

The spelling of 2138789430 in words is "two billion, one hundred thirty-eight million, seven hundred eighty-nine thousand, four hundred thirty".