1027117818 has 24 divisors (see below), whose sum is σ = 2228623956. Its totient is φ = 341880000.

The previous prime is 1027117807. The next prime is 1027117829. The reversal of 1027117818 is 8187117201.

It is an interprime number because it is at equal distance from previous prime (1027117807) and next prime (1027117829).

It can be written as a sum of positive squares in 2 ways, for example, as 921911769 + 105206049 = 30363^2 + 10257^2 .

It is a super-2 number, since 2×1027117818² = 2109942024106162248, which contains 22 as substring.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 28083 + ... + 53318.

Almost surely, 2^1027117818 is an apocalyptic number.

1027117818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1027117818 is an abundant number, since it is smaller than the sum of its proper divisors (1201506138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1027117818 is a wasteful number, since it uses less digits than its factorization.

1027117818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82110 (or 82107 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 36.

The square root of 1027117818 is about 32048.6788807277. The cubic root of 1027117818 is about 1008.9587733704.

The spelling of 1027117818 in words is "one billion, twenty-seven million, one hundred seventeen thousand, eight hundred eighteen".