1381824373 has 4 divisors (see below), whose sum is σ = 1400753548. Its totient is φ = 1362895200.

The previous prime is 1381824317. The next prime is 1381824377. The reversal of 1381824373 is 3734281831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 664763089 + 717061284 = 25783^2 + 26778^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381824373 - 2¹³ = 1381816181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381824377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9464478 + ... + 9464623.

It is an arithmetic number, because the mean of its divisors is an integer number (350188387).

Almost surely, 2^1381824373 is an apocalyptic number.

It is an amenable number.

1381824373 is a deficient number, since it is larger than the sum of its proper divisors (18929175).

1381824373 is an equidigital number, since it uses as much as digits as its factorization.

1381824373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18929174.

The product of its digits is 96768, while the sum is 40.

The square root of 1381824373 is about 37172.8983669555. The cubic root of 1381824373 is about 1113.8266791650.

The spelling of 1381824373 in words is "one billion, three hundred eighty-one million, eight hundred twenty-four thousand, three hundred seventy-three".