1801317312 has 224 divisors, whose sum is σ = 5623925760. Its totient is φ = 564157440.

The previous prime is 1801317241. The next prime is 1801317359. The reversal of 1801317312 is 2137131081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2424013 + ... + 2424755.

Almost surely, 2^1801317312 is an apocalyptic number.

1801317312 is a gapful number since it is divisible by the number (12) 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 1801317312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2811962880).

1801317312 is an abundant number, since it is smaller than the sum of its proper divisors (3822608448).

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

1801317312 is a wasteful number, since it uses less digits than its factorization.

1801317312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1801317312 is about 42441.9287026403. The cubic root of 1801317312 is about 1216.7370733343.

Adding to 1801317312 its reverse (2137131081), we get a palindrome (3938448393).

The spelling of 1801317312 in words is "one billion, eight hundred one million, three hundred seventeen thousand, three hundred twelve".