1819009116 has 96 divisors (see below), whose sum is σ = 4846248960. Its totient is φ = 589680000.

The previous prime is 1819009111. The next prime is 1819009121. The reversal of 1819009116 is 6119009181.

1819009116 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1819009111) and next prime (1819009121).

It is a super-2 number, since 2×1819009116² = 6617588328182202912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1819009111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2421741 + ... + 2422491.

It is an arithmetic number, because the mean of its divisors is an integer number (50481760).

Almost surely, 2^1819009116 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 1819009116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2423124480).

1819009116 is an abundant number, since it is smaller than the sum of its proper divisors (3027239844).

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

1819009116 is a wasteful number, since it uses less digits than its factorization.

1819009116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 36.

The square root of 1819009116 is about 42649.8430946703. The cubic root of 1819009116 is about 1220.7075345854.

The spelling of 1819009116 in words is "one billion, eight hundred nineteen million, nine thousand, one hundred sixteen".