378315533 has 4 divisors (see below), whose sum is σ = 378836640. Its totient is φ = 377794428.

The previous prime is 378315529. The next prime is 378315541. The reversal of 378315533 is 335513873.

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 378315533 - 2² = 378315529 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 (378315503) 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, 259463 + ... + 260916.

It is an arithmetic number, because the mean of its divisors is an integer number (94709160).

Almost surely, 2^378315533 is an apocalyptic number.

It is an amenable number.

378315533 is a deficient number, since it is larger than the sum of its proper divisors (521107).

378315533 is an equidigital number, since it uses as much as digits as its factorization.

378315533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521106.

The product of its digits is 113400, while the sum is 38.

The square root of 378315533 is about 19450.3350356748. The cubic root of 378315533 is about 723.2438083307.

The spelling of 378315533 in words is "three hundred seventy-eight million, three hundred fifteen thousand, five hundred thirty-three".