2787872953 has 4 divisors (see below), whose sum is σ = 2803275748. Its totient is φ = 2772470160.

The previous prime is 2787872951. The next prime is 2787872957. The reversal of 2787872953 is 3592787872.

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

It can be written as a sum of positive squares in 2 ways, for example, as 639735849 + 2148137104 = 25293^2 + 46348^2 .

It is a cyclic number.

It is not a de Polignac number, because 2787872953 - 2¹ = 2787872951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2787872951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7701126 + ... + 7701487.

It is an arithmetic number, because the mean of its divisors is an integer number (700818937).

Almost surely, 2^2787872953 is an apocalyptic number.

It is an amenable number.

2787872953 is a deficient number, since it is larger than the sum of its proper divisors (15402795).

2787872953 is a wasteful number, since it uses less digits than its factorization.

2787872953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15402794.

The product of its digits is 11854080, while the sum is 58.

The square root of 2787872953 is about 52800.3120540021. The cubic root of 2787872953 is about 1407.4219701470.

The spelling of 2787872953 in words is "two billion, seven hundred eighty-seven million, eight hundred seventy-two thousand, nine hundred fifty-three".