1061868819 has 16 divisors (see below), whose sum is σ = 1545421824. Its totient is φ = 643188000.

The previous prime is 1061868817. The next prime is 1061868851. The reversal of 1061868819 is 9188681601.

It is not a de Polignac number, because 1061868819 - 2¹ = 1061868817 is a prime.

It is a super-2 number, since 2×1061868819² = 2255130777528909522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061868817) 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 15 ways as a sum of consecutive naturals, for example, 56137 + ... + 72629.

It is an arithmetic number, because the mean of its divisors is an integer number (96588864).

Almost surely, 2^1061868819 is an apocalyptic number.

1061868819 is a deficient number, since it is larger than the sum of its proper divisors (483553005).

1061868819 is a wasteful number, since it uses less digits than its factorization.

1061868819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18458.

The product of its (nonzero) digits is 165888, while the sum is 48.

The square root of 1061868819 is about 32586.3287131275. The cubic root of 1061868819 is about 1020.2116755999.

The spelling of 1061868819 in words is "one billion, sixty-one million, eight hundred sixty-eight thousand, eight hundred nineteen".