378767985 has 16 divisors (see below), whose sum is σ = 626927040. Its totient is φ = 195043520.

The previous prime is 378767969. The next prime is 378767989. The reversal of 378767985 is 589767873.

It is not a de Polignac number, because 378767985 - 2⁴ = 378767969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378767989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434931 + ... + 435800.

It is an arithmetic number, because the mean of its divisors is an integer number (39182940).

Almost surely, 2^378767985 is an apocalyptic number.

It is an amenable number.

378767985 is a deficient number, since it is larger than the sum of its proper divisors (248159055).

378767985 is a wasteful number, since it uses less digits than its factorization.

378767985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870768.

The product of its digits is 17781120, while the sum is 60.

The square root of 378767985 is about 19461.9625166631. The cubic root of 378767985 is about 723.5320181385.

The spelling of 378767985 in words is "three hundred seventy-eight million, seven hundred sixty-seven thousand, nine hundred eighty-five".