1020057818 has 24 divisors (see below), whose sum is σ = 1657046748. Its totient is φ = 468162432.

The previous prime is 1020057809. The next prime is 1020057853. The reversal of 1020057818 is 8187500201.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 969263689 + 50794129 = 31133^2 + 7127^2 .

It is a super-2 number, since 2×1020057818² = 2081035904125842248, 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, 2231846 + ... + 2232302.

Almost surely, 2^1020057818 is an apocalyptic number.

1020057818 is a deficient number, since it is larger than the sum of its proper divisors (636988930).

1020057818 is an equidigital number, since it uses as much as digits as its factorization.

1020057818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 1020057818 is about 31938.3440084172. The cubic root of 1020057818 is about 1006.6417291066.

The spelling of 1020057818 in words is "one billion, twenty million, fifty-seven thousand, eight hundred eighteen".