1381784468 has 12 divisors (see below), whose sum is σ = 2424608340. Its totient is φ = 689039232.

The previous prime is 1381784461. The next prime is 1381784473. The reversal of 1381784468 is 8644871831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 583608964 + 798175504 = 24158^2 + 28252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381784461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461573 + ... + 464556.

It is an arithmetic number, because the mean of its divisors is an integer number (202050695).

Almost surely, 2^1381784468 is an apocalyptic number.

It is an amenable number.

1381784468 is a deficient number, since it is larger than the sum of its proper divisors (1042823872).

1381784468 is a wasteful number, since it uses less digits than its factorization.

1381784468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926506 (or 926504 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 50.

The square root of 1381784468 is about 37172.3616145114. The cubic root of 1381784468 is about 1113.8159571846.

The spelling of 1381784468 in words is "one billion, three hundred eighty-one million, seven hundred eighty-four thousand, four hundred sixty-eight".