1809346136 has 64 divisors (see below), whose sum is σ = 3869510400. Its totient is φ = 786250368.

The previous prime is 1809346111. The next prime is 1809346153. The reversal of 1809346136 is 6316439081.

It is a junction number, because it is equal to n+sod(n) for n = 1809346093 and 1809346102.

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 15 ways as a sum of consecutive naturals, for example, 327251 + ... + 332733.

It is an arithmetic number, because the mean of its divisors is an integer number (60461100).

Almost surely, 2^1809346136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1809346136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1934755200).

1809346136 is an abundant number, since it is smaller than the sum of its proper divisors (2060164264).

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

1809346136 is a wasteful number, since it uses less digits than its factorization.

1809346136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688 (or 5684 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1809346136 is about 42536.4095334808. The cubic root of 1809346136 is about 1218.5421392745.

The spelling of 1809346136 in words is "one billion, eight hundred nine million, three hundred forty-six thousand, one hundred thirty-six".