1442963381 has 8 divisors (see below), whose sum is σ = 1450633944. Its totient is φ = 1435311360.

The previous prime is 1442963377. The next prime is 1442963419. The reversal of 1442963381 is 1833692441.

It can be written as a sum of positive squares in 4 ways, for example, as 9205156 + 1433758225 = 3034^2 + 37865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1442963381 - 2² = 1442963377 is a prime.

It is a super-2 number, since 2×1442963381² = 4164286637813902322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442963321) 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 7 ways as a sum of consecutive naturals, for example, 168065 + ... + 176441.

It is an arithmetic number, because the mean of its divisors is an integer number (181329243).

Almost surely, 2^1442963381 is an apocalyptic number.

It is an amenable number.

1442963381 is a deficient number, since it is larger than the sum of its proper divisors (7670563).

1442963381 is an equidigital number, since it uses as much as digits as its factorization.

1442963381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271.

The product of its digits is 124416, while the sum is 41.

The square root of 1442963381 is about 37986.3578275149. The cubic root of 1442963381 is about 1130.0173284209.

The spelling of 1442963381 in words is "one billion, four hundred forty-two million, nine hundred sixty-three thousand, three hundred eighty-one".