378411785 has 8 divisors (see below), whose sum is σ = 462662280. Its totient is φ = 297017344.

The previous prime is 378411773. The next prime is 378411797. The reversal of 378411785 is 587114873.

It is an interprime number because it is at equal distance from previous prime (378411773) and next prime (378411797).

It can be written as a sum of positive squares in 4 ways, for example, as 115842169 + 262569616 = 10763^2 + 16204^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 378411785 - 2⁴ = 378411769 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 713720 + ... + 714249.

It is an arithmetic number, because the mean of its divisors is an integer number (57832785).

Almost surely, 2^378411785 is an apocalyptic number.

It is an amenable number.

378411785 is a deficient number, since it is larger than the sum of its proper divisors (84250495).

378411785 is a wasteful number, since it uses less digits than its factorization.

378411785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428027.

The product of its digits is 188160, while the sum is 44.

The square root of 378411785 is about 19452.8091801673. The cubic root of 378411785 is about 723.3051396393.

The spelling of 378411785 in words is "three hundred seventy-eight million, four hundred eleven thousand, seven hundred eighty-five".