1813036550 has 48 divisors (see below), whose sum is σ = 3748843392. Its totient is φ = 647827200.

The previous prime is 1813036543. The next prime is 1813036559. The reversal of 1813036550 is 556303181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813036559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24839 + ... + 65138.

It is an arithmetic number, because the mean of its divisors is an integer number (78100904).

Almost surely, 2^1813036550 is an apocalyptic number.

1813036550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1813036550 is an abundant number, since it is smaller than the sum of its proper divisors (1935806842).

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

1813036550 is a wasteful number, since it uses less digits than its factorization.

1813036550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90033 (or 90028 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1813036550 is about 42579.7669087091. The cubic root of 1813036550 is about 1219.3700389177.

The spelling of 1813036550 in words is "one billion, eight hundred thirteen million, thirty-six thousand, five hundred fifty".