1378233373 has 4 divisors (see below), whose sum is σ = 1503527328. Its totient is φ = 1252939420.

The previous prime is 1378233361. The next prime is 1378233379. The reversal of 1378233373 is 3733328731.

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.

It is a cyclic number.

It is not a de Polignac number, because 1378233373 - 2⁵ = 1378233341 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378233379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62646961 + ... + 62646982.

It is an arithmetic number, because the mean of its divisors is an integer number (375881832).

Almost surely, 2^1378233373 is an apocalyptic number.

It is an amenable number.

1378233373 is a deficient number, since it is larger than the sum of its proper divisors (125293955).

1378233373 is a wasteful number, since it uses less digits than its factorization.

1378233373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125293954.

The product of its digits is 190512, while the sum is 40.

The square root of 1378233373 is about 37124.5656270885. The cubic root of 1378233373 is about 1112.8609941225.

The spelling of 1378233373 in words is "one billion, three hundred seventy-eight million, two hundred thirty-three thousand, three hundred seventy-three".