1381341056 has 16 divisors (see below), whose sum is σ = 2751890640. Its totient is φ = 690670464.

The previous prime is 1381341047. The next prime is 1381341089. The reversal of 1381341056 is 6501431831.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×1381341056² = 3816206225982390272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5395736 + ... + 5395991.

It is an arithmetic number, because the mean of its divisors is an integer number (171993165).

Almost surely, 2^1381341056 is an apocalyptic number.

1381341056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381341056 is a deficient number, since it is larger than the sum of its proper divisors (1370549584).

1381341056 is an equidigital number, since it uses as much as digits as its factorization.

1381341056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10791741 (or 10791729 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1381341056 is about 37166.3968659864. The cubic root of 1381341056 is about 1113.6968039663.

Adding to 1381341056 its reverse (6501431831), we get a palindrome (7882772887).

The spelling of 1381341056 in words is "one billion, three hundred eighty-one million, three hundred forty-one thousand, fifty-six".