1808986746 has 16 divisors (see below), whose sum is σ = 4134826944. Its totient is φ = 516853344.

The previous prime is 1808986733. The next prime is 1808986747. The reversal of 1808986746 is 6476898081.

It is not an unprimeable number, because it can be changed into a prime (1808986747) 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 7 ways as a sum of consecutive naturals, for example, 21535515 + ... + 21535598.

It is an arithmetic number, because the mean of its divisors is an integer number (258426684).

Almost surely, 2^1808986746 is an apocalyptic number.

1808986746 is an abundant number, since it is smaller than the sum of its proper divisors (2325840198).

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

1808986746 is a wasteful number, since it uses less digits than its factorization.

1808986746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43071125.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 1808986746 is about 42532.1848251415. The cubic root of 1808986746 is about 1218.4614543521.

The spelling of 1808986746 in words is "one billion, eight hundred eight million, nine hundred eighty-six thousand, seven hundred forty-six".