1820914230 has 32 divisors (see below), whose sum is σ = 4411044864. Its totient is φ = 481038176.

The previous prime is 1820914219. The next prime is 1820914231. The reversal of 1820914230 is 324190281.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820914231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280422 + ... + 286841.

It is an arithmetic number, because the mean of its divisors is an integer number (137845152).

Almost surely, 2^1820914230 is an apocalyptic number.

1820914230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1820914230 is an abundant number, since it is smaller than the sum of its proper divisors (2590130634).

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

1820914230 is a wasteful number, since it uses less digits than its factorization.

1820914230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567380.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1820914230 is about 42672.1716110160. The cubic root of 1820914230 is about 1221.1335496019.

The spelling of 1820914230 in words is "one billion, eight hundred twenty million, nine hundred fourteen thousand, two hundred thirty".