1381744323 has 12 divisors (see below), whose sum is σ = 2004206880. Its totient is φ = 917307216.

The previous prime is 1381744267. The next prime is 1381744333. The reversal of 1381744323 is 3234471831.

It is not a de Polignac number, because 1381744323 - 2¹⁰ = 1381743299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1381744333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319036 + ... + 323337.

It is an arithmetic number, because the mean of its divisors is an integer number (167017240).

Almost surely, 2^1381744323 is an apocalyptic number.

1381744323 is a deficient number, since it is larger than the sum of its proper divisors (622462557).

1381744323 is a wasteful number, since it uses less digits than its factorization.

1381744323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642618 (or 642615 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 1381744323 is about 37171.8216260651. The cubic root of 1381744323 is about 1113.8051705109.

The spelling of 1381744323 in words is "one billion, three hundred eighty-one million, seven hundred forty-four thousand, three hundred twenty-three".