1808170416 has 240 divisors, whose sum is σ = 5937640800. Its totient is φ = 508612608.

The previous prime is 1808170411. The next prime is 1808170447. The reversal of 1808170416 is 6140718081.

It is a super-2 number, since 2×1808170416² = 6538960506595226112, which contains 22 as substring.

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 (1808170411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1030596 + ... + 1032348.

It is an arithmetic number, because the mean of its divisors is an integer number (24740170).

Almost surely, 2^1808170416 is an apocalyptic number.

1808170416 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 1808170416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2968820400).

1808170416 is an abundant number, since it is smaller than the sum of its proper divisors (4129470384).

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

1808170416 is a wasteful number, since it uses less digits than its factorization.

1808170416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 1808170416 is about 42522.5871273139. The cubic root of 1808170416 is about 1218.2781443126.

Adding to 1808170416 its reverse (6140718081), we get a palindrome (7948888497).

The spelling of 1808170416 in words is "one billion, eight hundred eight million, one hundred seventy thousand, four hundred sixteen".