1381053056 has 16 divisors (see below), whose sum is σ = 2751316890. Its totient is φ = 690526464.

The previous prime is 1381053017. The next prime is 1381053073. The reversal of 1381053056 is 6503501831.

It can be written as a sum of positive squares in only one way, i.e., 771950656 + 609102400 = 27784^2 + 24680^2 .

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

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5394611 + ... + 5394866.

Almost surely, 2^1381053056 is an apocalyptic number.

1381053056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381053056 is a deficient number, since it is larger than the sum of its proper divisors (1370263834).

1381053056 is an equidigital number, since it uses as much as digits as its factorization.

1381053056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10789491 (or 10789479 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1381053056 is about 37162.5221964279. The cubic root of 1381053056 is about 1113.6193992415.

Adding to 1381053056 its reverse (6503501831), we get a palindrome (7884554887).

It can be divided in two parts, 13810 and 53056, that added together give a palindrome (66866).

The spelling of 1381053056 in words is "one billion, three hundred eighty-one million, fifty-three thousand, fifty-six".