378069149 has 4 divisors (see below), whose sum is σ = 390264960. Its totient is φ = 365873340.

The previous prime is 378069121. The next prime is 378069151. The reversal of 378069149 is 941960873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941960873 = 7 ⋅134565839.

It is a cyclic number.

It is not a de Polignac number, because 378069149 - 2²⁰ = 377020573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378069449) 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 3 ways as a sum of consecutive naturals, for example, 6097859 + ... + 6097920.

It is an arithmetic number, because the mean of its divisors is an integer number (97566240).

Almost surely, 2^378069149 is an apocalyptic number.

It is an amenable number.

378069149 is a deficient number, since it is larger than the sum of its proper divisors (12195811).

378069149 is a wasteful number, since it uses less digits than its factorization.

378069149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12195810.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 378069149 is about 19444.0003342934. Note that the first 3 decimals coincide. The cubic root of 378069149 is about 723.0867662277.

The spelling of 378069149 in words is "three hundred seventy-eight million, sixty-nine thousand, one hundred forty-nine".