378788105 has 4 divisors (see below), whose sum is σ = 454545732. Its totient is φ = 303030480.

The previous prime is 378788029. The next prime is 378788107. The reversal of 378788105 is 501887873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129527161 + 249260944 = 11381^2 + 15788^2 .

It is not a de Polignac number, because 378788105 - 2¹⁴ = 378771721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378788105.

It is not an unprimeable number, because it can be changed into a prime (378788107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37878806 + ... + 37878815.

It is an arithmetic number, because the mean of its divisors is an integer number (113636433).

Almost surely, 2^378788105 is an apocalyptic number.

It is an amenable number.

378788105 is a deficient number, since it is larger than the sum of its proper divisors (75757627).

378788105 is an equidigital number, since it uses as much as digits as its factorization.

378788105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75757626.

The product of its (nonzero) digits is 376320, while the sum is 47.

The square root of 378788105 is about 19462.4794155318. The cubic root of 378788105 is about 723.5448291530.

The spelling of 378788105 in words is "three hundred seventy-eight million, seven hundred eighty-eight thousand, one hundred five".