2138789432 has 32 divisors (see below), whose sum is σ = 4338122880. Its totient is φ = 982696320.

The previous prime is 2138789423. The next prime is 2138789449. The reversal of 2138789432 is 2349878312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22919 + ... + 69302.

It is an arithmetic number, because the mean of its divisors is an integer number (135566340).

Almost surely, 2^2138789432 is an apocalyptic number.

It is an amenable number.

2138789432 is an abundant number, since it is smaller than the sum of its proper divisors (2199333448).

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

2138789432 is a wasteful number, since it uses less digits than its factorization.

2138789432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92463 (or 92459 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 2138789432 is about 46247.0478192933. The cubic root of 2138789432 is about 1288.4157046468.

The spelling of 2138789432 in words is "two billion, one hundred thirty-eight million, seven hundred eighty-nine thousand, four hundred thirty-two".