378018549 has 16 divisors (see below), whose sum is σ = 565468800. Its totient is φ = 249563808.

The previous prime is 378018533. The next prime is 378018569. The reversal of 378018549 is 945810873.

It is not a de Polignac number, because 378018549 - 2⁴ = 378018533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378018569) 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, 65184 + ... + 70745.

It is an arithmetic number, because the mean of its divisors is an integer number (35341800).

Almost surely, 2^378018549 is an apocalyptic number.

It is an amenable number.

378018549 is a deficient number, since it is larger than the sum of its proper divisors (187450251).

378018549 is a wasteful number, since it uses less digits than its factorization.

378018549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136041 (or 136035 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 378018549 is about 19442.6991181780. The cubic root of 378018549 is about 723.0545059715.

The spelling of 378018549 in words is "three hundred seventy-eight million, eighteen thousand, five hundred forty-nine".