378458115 has 48 divisors (see below), whose sum is σ = 706714272. Its totient is φ = 172440576.

The previous prime is 378458099. The next prime is 378458117. The reversal of 378458115 is 511854873.

It is a Cunningham number, because it is equal to 19454²-1.

It is not a de Polignac number, because 378458115 - 2⁴ = 378458099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378458117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 291147 + ... + 292443.

It is an arithmetic number, because the mean of its divisors is an integer number (14723214).

Almost surely, 2^378458115 is an apocalyptic number.

378458115 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

378458115 is a deficient number, since it is larger than the sum of its proper divisors (328256157).

378458115 is a wasteful number, since it uses less digits than its factorization.

378458115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 1709 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 378458115 is about 19453.9999742983. Note that the first 4 decimals coincide. The cubic root of 378458115 is about 723.3346571834.

The spelling of 378458115 in words is "three hundred seventy-eight million, four hundred fifty-eight thousand, one hundred fifteen".