378153605 has 4 divisors (see below), whose sum is σ = 453784332. Its totient is φ = 302522880.

The previous prime is 378153583. The next prime is 378153617. The reversal of 378153605 is 506351873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506351873 = 2677 ⋅189149.

It can be written as a sum of positive squares in 2 ways, for example, as 189723076 + 188430529 = 13774^2 + 13727^2 .

It is not a de Polignac number, because 378153605 - 2⁶ = 378153541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37815356 + ... + 37815365.

It is an arithmetic number, because the mean of its divisors is an integer number (113446083).

Almost surely, 2^378153605 is an apocalyptic number.

It is an amenable number.

378153605 is a deficient number, since it is larger than the sum of its proper divisors (75630727).

378153605 is an equidigital number, since it uses as much as digits as its factorization.

378153605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75630726.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 378153605 is about 19446.1719883374. The cubic root of 378153605 is about 723.1406051169.

The spelling of 378153605 in words is "three hundred seventy-eight million, one hundred fifty-three thousand, six hundred five".