1812941928 has 96 divisors (see below), whose sum is σ = 5682643200. Its totient is φ = 511415424.

The previous prime is 1812941887. The next prime is 1812941929. The reversal of 1812941928 is 8291492181.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1812941929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17050 + ... + 62582.

It is an arithmetic number, because the mean of its divisors is an integer number (59194200).

Almost surely, 2^1812941928 is an apocalyptic number.

1812941928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812941928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2841321600).

1812941928 is an abundant number, since it is smaller than the sum of its proper divisors (3869701272).

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

1812941928 is a wasteful number, since it uses less digits than its factorization.

1812941928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45631 (or 45624 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 1812941928 is about 42578.6557796274. The cubic root of 1812941928 is about 1219.3488256592.

The spelling of 1812941928 in words is "one billion, eight hundred twelve million, nine hundred forty-one thousand, nine hundred twenty-eight".