1381330033 has 4 divisors (see below), whose sum is σ = 1381404400. Its totient is φ = 1381255668.

The previous prime is 1381329997. The next prime is 1381330051. The reversal of 1381330033 is 3300331831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1381330033 - 2²⁵ = 1347775601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381330633) 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, 16918 + ... + 55216.

It is an arithmetic number, because the mean of its divisors is an integer number (345351100).

Almost surely, 2^1381330033 is an apocalyptic number.

It is an amenable number.

1381330033 is a deficient number, since it is larger than the sum of its proper divisors (74367).

1381330033 is an equidigital number, since it uses as much as digits as its factorization.

1381330033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74366.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1381330033 is about 37166.2485731342. The cubic root of 1381330033 is about 1113.6938415523.

Adding to 1381330033 its reverse (3300331831), we get a palindrome (4681661864).

The spelling of 1381330033 in words is "one billion, three hundred eighty-one million, three hundred thirty thousand, thirty-three".