1806851996 has 12 divisors (see below), whose sum is σ = 3164177352. Its totient is φ = 902801328.

The previous prime is 1806851993. The next prime is 1806852011. The reversal of 1806851996 is 6991586081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806851993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149630 + ... + 161253.

It is an arithmetic number, because the mean of its divisors is an integer number (263681446).

Almost surely, 2^1806851996 is an apocalyptic number.

It is an amenable number.

1806851996 is a deficient number, since it is larger than the sum of its proper divisors (1357325356).

1806851996 is a wasteful number, since it uses less digits than its factorization.

1806851996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312340 (or 312338 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 1806851996 is about 42507.0817158741. The cubic root of 1806851996 is about 1217.9819714887.

The spelling of 1806851996 in words is "one billion, eight hundred six million, eight hundred fifty-one thousand, nine hundred ninety-six".