2138870376 has 48 divisors (see below), whose sum is σ = 5845940100. Its totient is φ = 706413312.

The previous prime is 2138870347. The next prime is 2138870399. The reversal of 2138870376 is 6730788312.

It can be written as a sum of positive squares in 2 ways, for example, as 1986841476 + 152028900 = 44574^2 + 12330^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128421 + ... + 144116.

Almost surely, 2^2138870376 is an apocalyptic number.

It is an amenable number.

2138870376 is an abundant number, since it is smaller than the sum of its proper divisors (3707069724).

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

2138870376 is a wasteful number, since it uses less digits than its factorization.

2138870376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272658 (or 272651 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 2138870376 is about 46247.9229371439. The cubic root of 2138870376 is about 1288.4319581099.

The spelling of 2138870376 in words is "two billion, one hundred thirty-eight million, eight hundred seventy thousand, three hundred seventy-six".