1027898866 has 4 divisors (see below), whose sum is σ = 1541848302. Its totient is φ = 513949432.

The previous prime is 1027898849. The next prime is 1027898869. The reversal of 1027898866 is 6688987201.

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

It can be written as a sum of positive squares in only one way, i.e., 733055625 + 294843241 = 27075^2 + 17171^2 .

It is not an unprimeable number, because it can be changed into a prime (1027898869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256974715 + ... + 256974718.

Almost surely, 2^1027898866 is an apocalyptic number.

1027898866 is a deficient number, since it is larger than the sum of its proper divisors (513949436).

1027898866 is an equidigital number, since it uses as much as digits as its factorization.

1027898866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513949435.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The square root of 1027898866 is about 32060.8619035733. The cubic root of 1027898866 is about 1009.2144550304.

The spelling of 1027898866 in words is "one billion, twenty-seven million, eight hundred ninety-eight thousand, eight hundred sixty-six".