1401443316 has 216 divisors, whose sum is σ = 4579626240. Its totient is φ = 369375552.

The previous prime is 1401443279. The next prime is 1401443327. The reversal of 1401443316 is 6133441041.

It is a super-2 number, since 2×1401443316² = 3928086735922151712, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1401443316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 893565 + ... + 895131.

Almost surely, 2^1401443316 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 1401443316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2289813120).

1401443316 is an abundant number, since it is smaller than the sum of its proper divisors (3178182924).

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

1401443316 is a wasteful number, since it uses less digits than its factorization.

1401443316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620 (or 1592 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1401443316 is about 37435.8560206655. The cubic root of 1401443316 is about 1119.0732437736.

Adding to 1401443316 its reverse (6133441041), we get a palindrome (7534884357).

The spelling of 1401443316 in words is "one billion, four hundred one million, four hundred forty-three thousand, three hundred sixteen".