1027898849 has 2 divisors, whose sum is σ = 1027898850. Its totient is φ = 1027898848.

The previous prime is 1027898831. The next prime is 1027898869. The reversal of 1027898849 is 9488987201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 964537249 + 63361600 = 31057^2 + 7960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027898849 - 2¹² = 1027894753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1027898794 and 1027898803.

It is not a weakly prime, because it can be changed into another prime (1027898869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513949424 + 513949425.

It is an arithmetic number, because the mean of its divisors is an integer number (513949425).

Almost surely, 2^1027898849 is an apocalyptic number.

It is an amenable number.

1027898849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1027898849 is an equidigital number, since it uses as much as digits as its factorization.

1027898849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 56.

The square root of 1027898849 is about 32060.8616384526. The cubic root of 1027898849 is about 1009.2144494668.

The spelling of 1027898849 in words is "one billion, twenty-seven million, eight hundred ninety-eight thousand, eight hundred forty-nine".