1866122828 has 6 divisors (see below), whose sum is σ = 3265714956. Its totient is φ = 933061412.

The previous prime is 1866122821. The next prime is 1866122833. The reversal of 1866122828 is 8282216681.

It is not an unprimeable number, because it can be changed into a prime (1866122821) 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 as a sum of consecutive naturals, namely, 233265350 + ... + 233265357.

It is an arithmetic number, because the mean of its divisors is an integer number (544285826).

Almost surely, 2^1866122828 is an apocalyptic number.

It is an amenable number.

1866122828 is a deficient number, since it is larger than the sum of its proper divisors (1399592128).

1866122828 is a wasteful number, since it uses less digits than its factorization.

1866122828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466530711 (or 466530709 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 1866122828 is about 43198.6438213053. The cubic root of 1866122828 is about 1231.1569144397.

The spelling of 1866122828 in words is "one billion, eight hundred sixty-six million, one hundred twenty-two thousand, eight hundred twenty-eight".