1338473141776 has 45 divisors (see below), whose sum is σ = 2606982980301. Its totient is φ = 665721835776.

The previous prime is 1338473141771. The next prime is 1338473141779. The reversal of 1338473141776 is 6771413748331.

The square root of 1338473141776 is 1156924.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1334348419600 + 4124722176 = 1155140^2 + 64224^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338473141771) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1031975560 + ... + 1031976856.

Almost surely, 2^{1338473141776} is an apocalyptic number.

1338473141776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1338473141776 is the 1156924-th square number.

It is an amenable number.

1338473141776 is a deficient number, since it is larger than the sum of its proper divisors (1268509838525).

1338473141776 is an frugal number, since it uses more digits than its factorization.

1338473141776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048 (or 1522 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 55.

The spelling of 1338473141776 in words is "one trillion, three hundred thirty-eight billion, four hundred seventy-three million, one hundred forty-one thousand, seven hundred seventy-six".