1811429808 has 20 divisors (see below), whose sum is σ = 4679527128. Its totient is φ = 603809920.

The previous prime is 1811429801. The next prime is 1811429819. The reversal of 1811429808 is 8089241181.

It is a self number, because there is not a number n which added to its sum of digits gives 1811429808.

It is not an unprimeable number, because it can be changed into a prime (1811429801) 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 3 ways as a sum of consecutive naturals, for example, 18869013 + ... + 18869108.

Almost surely, 2^1811429808 is an apocalyptic number.

It is an amenable number.

1811429808 is an abundant number, since it is smaller than the sum of its proper divisors (2868097320).

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

1811429808 is a wasteful number, since it uses less digits than its factorization.

1811429808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37738132 (or 37738126 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The square root of 1811429808 is about 42560.8952913352. The cubic root of 1811429808 is about 1219.0097240448.

The spelling of 1811429808 in words is "one billion, eight hundred eleven million, four hundred twenty-nine thousand, eight hundred eight".