378735555 has 16 divisors (see below), whose sum is σ = 661065984. Its totient is φ = 183629280.

The previous prime is 378735521. The next prime is 378735583. The reversal of 378735555 is 555537873.

It is a happy number.

It is not a de Polignac number, because 378735555 - 2¹¹ = 378733507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147519 + ... + 1147848.

It is an arithmetic number, because the mean of its divisors is an integer number (41316624).

Almost surely, 2^378735555 is an apocalyptic number.

378735555 is a deficient number, since it is larger than the sum of its proper divisors (282330429).

378735555 is a wasteful number, since it uses less digits than its factorization.

378735555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295386.

The product of its digits is 2205000, while the sum is 48.

The square root of 378735555 is about 19461.1293351645. The cubic root of 378735555 is about 723.5113680184.

The spelling of 378735555 in words is "three hundred seventy-eight million, seven hundred thirty-five thousand, five hundred fifty-five".