28849877831 has 2 divisors, whose sum is σ = 28849877832. Its totient is φ = 28849877830.

The previous prime is 28849877779. The next prime is 28849877857. The reversal of 28849877831 is 13877894882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28849877831 - 2¹⁰ = 28849876807 is a prime.

It is a super-2 number, since 2×28849877831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28849877531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14424938915 + 14424938916.

It is an arithmetic number, because the mean of its divisors is an integer number (14424938916).

Almost surely, 2^28849877831 is an apocalyptic number.

28849877831 is a deficient number, since it is larger than the sum of its proper divisors (1).

28849877831 is an equidigital number, since it uses as much as digits as its factorization.

28849877831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43352064, while the sum is 65.

The spelling of 28849877831 in words is "twenty-eight billion, eight hundred forty-nine million, eight hundred seventy-seven thousand, eight hundred thirty-one".