378124109 has 4 divisors (see below), whose sum is σ = 412499040. Its totient is φ = 343749180.

The previous prime is 378124093. The next prime is 378124121. The reversal of 378124109 is 901421873.

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.

It is a cyclic number.

It is not a de Polignac number, because 378124109 - 2⁴ = 378124093 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 (378124169) 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, 17187449 + ... + 17187470.

It is an arithmetic number, because the mean of its divisors is an integer number (103124760).

Almost surely, 2^378124109 is an apocalyptic number.

It is an amenable number.

378124109 is a deficient number, since it is larger than the sum of its proper divisors (34374931).

378124109 is a wasteful number, since it uses less digits than its factorization.

378124109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34374930.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 378124109 is about 19445.4135723569. The cubic root of 378124109 is about 723.1218029604.

The spelling of 378124109 in words is "three hundred seventy-eight million, one hundred twenty-four thousand, one hundred nine".