1819017216 has 152 divisors (see below), whose sum is σ = 5410641840. Its totient is φ = 603979776.

The previous prime is 1819017209. The next prime is 1819017217. The reversal of 1819017216 is 6127109181.

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

It is not an unprimeable number, because it can be changed into a prime (1819017217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7077760 + ... + 7078016.

Almost surely, 2^1819017216 is an apocalyptic number.

1819017216 is a gapful number since it is divisible by the number (16) 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 1819017216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2705320920).

1819017216 is an abundant number, since it is smaller than the sum of its proper divisors (3591624624).

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

1819017216 is an frugal number, since it uses more digits than its factorization.

1819017216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 36.

The square root of 1819017216 is about 42649.9380538823. The cubic root of 1819017216 is about 1220.7093465090.

The spelling of 1819017216 in words is "one billion, eight hundred nineteen million, seventeen thousand, two hundred sixteen".