1819406912 has 56 divisors (see below), whose sum is σ = 3837197304. Its totient is φ = 852959232.

The previous prime is 1819406899. The next prime is 1819406969. The reversal of 1819406912 is 2196049181.

It can be written as a sum of positive squares in 4 ways, for example, as 70829056 + 1748577856 = 8416^2 + 41816^2 .

It is a super-2 number, since 2×1819406912² = 6620483022866751488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1819406912.

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, 298358 + ... + 304394.

Almost surely, 2^1819406912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1819406912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918598652).

1819406912 is an abundant number, since it is smaller than the sum of its proper divisors (2017790392).

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

1819406912 is a wasteful number, since it uses less digits than its factorization.

1819406912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343 (or 6333 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1819406912 is about 42654.5063504432. The cubic root of 1819406912 is about 1220.7965129156.

The spelling of 1819406912 in words is "one billion, eight hundred nineteen million, four hundred six thousand, nine hundred twelve".