2628351281 has 2 divisors, whose sum is σ = 2628351282. Its totient is φ = 2628351280.

The previous prime is 2628351217. The next prime is 2628351359. The reversal of 2628351281 is 1821538262.

2628351281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2229350656 + 399000625 = 47216^2 + 19975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2628351281 - 2⁶ = 2628351217 is a prime.

It is a super-2 number, since 2×2628351281² = 13816460912668681922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2628351881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314175640 + 1314175641.

It is an arithmetic number, because the mean of its divisors is an integer number (1314175641).

Almost surely, 2^2628351281 is an apocalyptic number.

2628351281 is the 22928-th centered decagonal number.

It is an amenable number.

2628351281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2628351281 is an equidigital number, since it uses as much as digits as its factorization.

2628351281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 38.

The square root of 2628351281 is about 51267.4485516882. The cubic root of 2628351281 is about 1380.0488817314.

The spelling of 2628351281 in words is "two billion, six hundred twenty-eight million, three hundred fifty-one thousand, two hundred eighty-one".