1966025818 has 8 divisors (see below), whose sum is σ = 2955095712. Its totient is φ = 980993916.

The previous prime is 1966025693. The next prime is 1966025849. The reversal of 1966025818 is 8185206691.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 1008280 + ... + 1010227.

It is an arithmetic number, because the mean of its divisors is an integer number (369386964).

Almost surely, 2^1966025818 is an apocalyptic number.

1966025818 is a deficient number, since it is larger than the sum of its proper divisors (989069894).

1966025818 is a wasteful number, since it uses less digits than its factorization.

1966025818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018996.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 1966025818 is about 44339.8896931420. The cubic root of 1966025818 is about 1252.7461370736.

The spelling of 1966025818 in words is "one billion, nine hundred sixty-six million, twenty-five thousand, eight hundred eighteen".