1811364320 has 48 divisors (see below), whose sum is σ = 4282074720. Its totient is φ = 724084224.

The previous prime is 1811364319. The next prime is 1811364329. The reversal of 1811364320 is 234631181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1811364329) 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, 366989 + ... + 371891.

It is an arithmetic number, because the mean of its divisors is an integer number (89209890).

Almost surely, 2^1811364320 is an apocalyptic number.

1811364320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1811364320 is an abundant number, since it is smaller than the sum of its proper divisors (2470710400).

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

1811364320 is a wasteful number, since it uses less digits than its factorization.

1811364320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227 (or 7219 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1811364320 is about 42560.1259396633. The cubic root of 1811364320 is about 1218.9950337211.

The spelling of 1811364320 in words is "one billion, eight hundred eleven million, three hundred sixty-four thousand, three hundred twenty".