378545869 has 8 divisors (see below), whose sum is σ = 408223872. Its totient is φ = 348947760.

The previous prime is 378545863. The next prime is 378545887. The reversal of 378545869 is 968545873.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378545869 is a prime.

It is a super-2 number, since 2×378545869² = 286593949873930322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378545863) 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 7 ways as a sum of consecutive naturals, for example, 9937 + ... + 29254.

It is an arithmetic number, because the mean of its divisors is an integer number (51027984).

Almost surely, 2^378545869 is an apocalyptic number.

It is an amenable number.

378545869 is a deficient number, since it is larger than the sum of its proper divisors (29678003).

378545869 is a wasteful number, since it uses less digits than its factorization.

378545869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39947.

The product of its digits is 7257600, while the sum is 55.

The square root of 378545869 is about 19456.2552666231. The cubic root of 378545869 is about 723.3905599826.

The spelling of 378545869 in words is "three hundred seventy-eight million, five hundred forty-five thousand, eight hundred sixty-nine".