2138712590 has 64 divisors (see below), whose sum is σ = 4561522560. Its totient is φ = 706406400.

The previous prime is 2138712571. The next prime is 2138712593. The reversal of 2138712590 is 952178312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138712593) 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, 1219154 + ... + 1220906.

It is an arithmetic number, because the mean of its divisors is an integer number (71273790).

Almost surely, 2^2138712590 is an apocalyptic number.

2138712590 is an abundant number, since it is smaller than the sum of its proper divisors (2422809970).

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

2138712590 is a wasteful number, since it uses less digits than its factorization.

2138712590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 2138712590 is about 46246.2170344775. The cubic root of 2138712590 is about 1288.4002744813.

The spelling of 2138712590 in words is "two billion, one hundred thirty-eight million, seven hundred twelve thousand, five hundred ninety".