1809147064 has 16 divisors (see below), whose sum is σ = 3539635920. Its totient is φ = 865244160.

The previous prime is 1809147059. The next prime is 1809147071. The reversal of 1809147064 is 4607419081.

It is a congruent number.

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, 4915977 + ... + 4916344.

It is an arithmetic number, because the mean of its divisors is an integer number (221227245).

Almost surely, 2^1809147064 is an apocalyptic number.

It is an amenable number.

1809147064 is a deficient number, since it is larger than the sum of its proper divisors (1730488856).

1809147064 is a wasteful number, since it uses less digits than its factorization.

1809147064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832350 (or 9832346 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1809147064 is about 42534.0694502654. The cubic root of 1809147064 is about 1218.4974478962.

The spelling of 1809147064 in words is "one billion, eight hundred nine million, one hundred forty-seven thousand, sixty-four".