1829212220 has 24 divisors (see below), whose sum is σ = 4190559408. Its totient is φ = 665168000.

The previous prime is 1829212219. The next prime is 1829212279. The reversal of 1829212220 is 222129281.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4157081 + ... + 4157520.

It is an arithmetic number, because the mean of its divisors is an integer number (174606642).

Almost surely, 2^1829212220 is an apocalyptic number.

1829212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1829212220 is an abundant number, since it is smaller than the sum of its proper divisors (2361347188).

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

1829212220 is a wasteful number, since it uses less digits than its factorization.

1829212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8314621 (or 8314619 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1829212220 is about 42769.2906183865. The cubic root of 1829212220 is about 1222.9856596673.

The spelling of 1829212220 in words is "one billion, eight hundred twenty-nine million, two hundred twelve thousand, two hundred twenty".