378655549 has 8 divisors (see below), whose sum is σ = 388697760. Its totient is φ = 368669616.

The previous prime is 378655531. The next prime is 378655591. The reversal of 378655549 is 945556873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 378655549 - 2⁵ = 378655517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378655496 and 378655505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378625549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259 + ... + 27520.

It is an arithmetic number, because the mean of its divisors is an integer number (48587220).

Almost surely, 2^378655549 is an apocalyptic number.

It is an amenable number.

378655549 is a deficient number, since it is larger than the sum of its proper divisors (10042211).

378655549 is a wasteful number, since it uses less digits than its factorization.

378655549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28139.

The product of its digits is 4536000, while the sum is 52.

The square root of 378655549 is about 19459.0736932671. The cubic root of 378655549 is about 723.4604183728.

The spelling of 378655549 in words is "three hundred seventy-eight million, six hundred fifty-five thousand, five hundred forty-nine".