2138078060 has 48 divisors (see below), whose sum is σ = 4710865152. Its totient is φ = 814060800.

The previous prime is 2138078057. The next prime is 2138078069. The reversal of 2138078060 is 608708312.

It is a self number, because there is not a number n which added to its sum of digits gives 2138078060.

It is not an unprimeable number, because it can be changed into a prime (2138078069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9554 + ... + 66086.

It is an arithmetic number, because the mean of its divisors is an integer number (98143024).

Almost surely, 2^2138078060 is an apocalyptic number.

2138078060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2138078060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2355432576).

2138078060 is an abundant number, since it is smaller than the sum of its proper divisors (2572787092).

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

2138078060 is a wasteful number, since it uses less digits than its factorization.

2138078060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56634 (or 56632 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2138078060 is about 46239.3561806390. The cubic root of 2138078060 is about 1288.2728443170.

The spelling of 2138078060 in words is "two billion, one hundred thirty-eight million, seventy-eight thousand, sixty".