2851473994 has 4 divisors (see below), whose sum is σ = 4277210994. Its totient is φ = 1425736996.

The previous prime is 2851473991. The next prime is 2851474033. The reversal of 2851473994 is 4993741582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4993741582 = 2 ⋅2496870791.

It can be written as a sum of positive squares in only one way, i.e., 2317170769 + 534303225 = 48137^2 + 23115^2 .

It is not an unprimeable number, because it can be changed into a prime (2851473991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712868497 + ... + 712868500.

Almost surely, 2^2851473994 is an apocalyptic number.

2851473994 is a deficient number, since it is larger than the sum of its proper divisors (1425737000).

2851473994 is a wasteful number, since it uses less digits than its factorization.

2851473994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425736999.

The product of its digits is 2177280, while the sum is 52.

The square root of 2851473994 is about 53399.1946943023. The cubic root of 2851473994 is about 1418.0443212898.

The spelling of 2851473994 in words is "two billion, eight hundred fifty-one million, four hundred seventy-three thousand, nine hundred ninety-four".