378642547 has 16 divisors (see below), whose sum is σ = 412205760. Its totient is φ = 346458112.

The previous prime is 378642541. The next prime is 378642553. The reversal of 378642547 is 745246873.

It is an interprime number because it is at equal distance from previous prime (378642541) and next prime (378642553).

It is a cyclic number.

It is not a de Polignac number, because 378642547 - 2¹⁵ = 378609779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378642497 and 378642506.

It is not an unprimeable number, because it can be changed into a prime (378642541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 99954 + ... + 103672.

It is an arithmetic number, because the mean of its divisors is an integer number (25762860).

Almost surely, 2^378642547 is an apocalyptic number.

378642547 is a deficient number, since it is larger than the sum of its proper divisors (33563213).

378642547 is a wasteful number, since it uses less digits than its factorization.

378642547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902.

The product of its digits is 1128960, while the sum is 46.

The square root of 378642547 is about 19458.7396046095. The cubic root of 378642547 is about 723.4521377247.

The spelling of 378642547 in words is "three hundred seventy-eight million, six hundred forty-two thousand, five hundred forty-seven".