1921000230 has 24 divisors (see below), whose sum is σ = 4994600832. Its totient is φ = 512266704.

The previous prime is 1921000229. The next prime is 1921000259. The reversal of 1921000230 is 320001291.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10672134 + ... + 10672313.

It is an arithmetic number, because the mean of its divisors is an integer number (208108368).

Almost surely, 2^1921000230 is an apocalyptic number.

1921000230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1921000230 is an abundant number, since it is smaller than the sum of its proper divisors (3073600602).

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

1921000230 is a wasteful number, since it uses less digits than its factorization.

1921000230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21344460 (or 21344457 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1921000230 is about 43829.2166254429. The cubic root of 1921000230 is about 1243.1087945779.

The spelling of 1921000230 in words is "one billion, nine hundred twenty-one million, two hundred thirty", and thus it is an aban number.