1331644476 has 48 divisors (see below), whose sum is σ = 3336318720. Its totient is φ = 411882240.

The previous prime is 1331644423. The next prime is 1331644477. The reversal of 1331644476 is 6744461331.

It is a super-5 number, since 5×1331644476⁵ (a number of 47 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331644477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31486 + ... + 60453.

It is an arithmetic number, because the mean of its divisors is an integer number (69506640).

Almost surely, 2^1331644476 is an apocalyptic number.

It is an amenable number.

1331644476 is an abundant number, since it is smaller than the sum of its proper divisors (2004674244).

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

1331644476 is a wasteful number, since it uses less digits than its factorization.

1331644476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92034 (or 92032 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 1331644476 is about 36491.7042079429. The cubic root of 1331644476 is about 1100.1775129500.

The spelling of 1331644476 in words is "one billion, three hundred thirty-one million, six hundred forty-four thousand, four hundred seventy-six".