2781874234 has 4 divisors (see below), whose sum is σ = 4172811354. Its totient is φ = 1390937116.

The previous prime is 2781874181. The next prime is 2781874241. The reversal of 2781874234 is 4324781872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1888163209 + 893711025 = 43453^2 + 29895^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695468557 + ... + 695468560.

Almost surely, 2^2781874234 is an apocalyptic number.

2781874234 is a deficient number, since it is larger than the sum of its proper divisors (1390937120).

2781874234 is a wasteful number, since it uses less digits than its factorization.

2781874234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390937119.

The product of its digits is 602112, while the sum is 46.

The square root of 2781874234 is about 52743.4757481909. The cubic root of 2781874234 is about 1406.4117864257.

The spelling of 2781874234 in words is "two billion, seven hundred eighty-one million, eight hundred seventy-four thousand, two hundred thirty-four".