2786942868938 has 4 divisors (see below), whose sum is σ = 4180414303410. Its totient is φ = 1393471434468.

The previous prime is 2786942868929. The next prime is 2786942868949. The reversal of 2786942868938 is 8398682496872.

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., 1641993648409 + 1144949220529 = 1281403^2 + 1070023^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696735717233 + ... + 696735717236.

Almost surely, 2^{2786942868938} is an apocalyptic number.

2786942868938 is a deficient number, since it is larger than the sum of its proper divisors (1393471434472).

2786942868938 is a wasteful number, since it uses less digits than its factorization.

2786942868938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393471434471.

The product of its digits is 4013162496, while the sum is 80.

The spelling of 2786942868938 in words is "two trillion, seven hundred eighty-six billion, nine hundred forty-two million, eight hundred sixty-eight thousand, nine hundred thirty-eight".