1018289056 has 12 divisors (see below), whose sum is σ = 2004756642. Its totient is φ = 509144512.

The previous prime is 1018289039. The next prime is 1018289057. The reversal of 1018289056 is 6509828101.

It can be written as a sum of positive squares in only one way, i.e., 580810000 + 437479056 = 24100^2 + 20916^2 .

It is a super-2 number, since 2×1018289056² = 2073825203138742272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1018289057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15910735 + ... + 15910798.

Almost surely, 2^1018289056 is an apocalyptic number.

1018289056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1018289056 is a deficient number, since it is larger than the sum of its proper divisors (986467586).

1018289056 is an equidigital number, since it uses as much as digits as its factorization.

1018289056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31821543 (or 31821535 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1018289056 is about 31910.6417359476. The cubic root of 1018289056 is about 1006.0595595723.

The spelling of 1018289056 in words is "one billion, eighteen million, two hundred eighty-nine thousand, fifty-six".