1071800538 has 16 divisors (see below), whose sum is σ = 2147139840. Its totient is φ = 356677056.

The previous prime is 1071800491. The next prime is 1071800539. The reversal of 1071800538 is 8350081701.

It is a super-2 number, since 2×1071800538² = 2297512786514178888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1071800499 and 1071800508.

It is not an unprimeable number, because it can be changed into a prime (1071800539) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 143503 + ... + 150786.

It is an arithmetic number, because the mean of its divisors is an integer number (134196240).

Almost surely, 2^1071800538 is an apocalyptic number.

1071800538 is an abundant number, since it is smaller than the sum of its proper divisors (1075339302).

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

1071800538 is a wasteful number, since it uses less digits than its factorization.

1071800538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294901.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1071800538 is about 32738.3649255732. The cubic root of 1071800538 is about 1023.3825095173.

The spelling of 1071800538 in words is "one billion, seventy-one million, eight hundred thousand, five hundred thirty-eight".