1027878657 has 16 divisors (see below), whose sum is σ = 1479457728. Its totient is φ = 631028160.

The previous prime is 1027878647. The next prime is 1027878659. The reversal of 1027878657 is 7568787201.

It is not a de Polignac number, because 1027878657 - 2⁴ = 1027878641 is a prime.

It is a super-2 number, since 2×1027878657² = 2113069067032247298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1027878659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14883 + ... + 47720.

It is an arithmetic number, because the mean of its divisors is an integer number (92466108).

Almost surely, 2^1027878657 is an apocalyptic number.

It is an amenable number.

1027878657 is a deficient number, since it is larger than the sum of its proper divisors (451579071).

1027878657 is a wasteful number, since it uses less digits than its factorization.

1027878657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63040.

The product of its (nonzero) digits is 1317120, while the sum is 51.

The square root of 1027878657 is about 32060.5467358247. The cubic root of 1027878657 is about 1009.2078411020.

The spelling of 1027878657 in words is "one billion, twenty-seven million, eight hundred seventy-eight thousand, six hundred fifty-seven".