378393516 has 72 divisors (see below), whose sum is σ = 1007645184. Its totient is φ = 119491680.

The previous prime is 378393503. The next prime is 378393517. The reversal of 378393516 is 615393873.

It is not an unprimeable number, because it can be changed into a prime (378393517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86461 + ... + 90731.

It is an arithmetic number, because the mean of its divisors is an integer number (13995072).

Almost surely, 2^378393516 is an apocalyptic number.

378393516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378393516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503822592).

378393516 is an abundant number, since it is smaller than the sum of its proper divisors (629251668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378393516 is a wasteful number, since it uses less digits than its factorization.

378393516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411 (or 4406 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 378393516 is about 19452.3396022175. The cubic root of 378393516 is about 723.2934995206.

The spelling of 378393516 in words is "three hundred seventy-eight million, three hundred ninety-three thousand, five hundred sixteen".