1461216000 has 288 divisors, whose sum is σ = 5020194816. Its totient is φ = 376320000.

The previous prime is 1461215999. The next prime is 1461216019. The reversal of 1461216000 is 6121641.

It is a super-3 number, since 3×1461216000³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2975755 + ... + 2976245.

It is an arithmetic number, because the mean of its divisors is an integer number (17431232).

Almost surely, 2^1461216000 is an apocalyptic number.

1461216000 is a gapful number since it is divisible by the number (10) 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 1461216000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2510097408).

1461216000 is an abundant number, since it is smaller than the sum of its proper divisors (3558978816).

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

1461216000 is an equidigital number, since it uses as much as digits as its factorization.

1461216000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1461216000 is about 38225.8551245096. The cubic root of 1461216000 is about 1134.7620581899.

Adding to 1461216000 its reverse (6121641), we get a palindrome (1467337641).

The spelling of 1461216000 in words is "one billion, four hundred sixty-one million, two hundred sixteen thousand".