63819378 has 48 divisors (see below), whose sum is σ = 158473536. Its totient is φ = 18182880.

The previous prime is 63819311. The next prime is 63819383. The reversal of 63819378 is 87391836.

It is a happy number.

63819378 is a `hidden beast` number, since 638 + 1 + 9 + 3 + 7 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86700 + ... + 87432.

It is an arithmetic number, because the mean of its divisors is an integer number (3301532).

Almost surely, 2^63819378 is an apocalyptic number.

63819378 is an abundant number, since it is smaller than the sum of its proper divisors (94654158).

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

63819378 is a wasteful number, since it uses less digits than its factorization.

63819378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 1436 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 63819378 is about 7988.7031488221. The cubic root of 63819378 is about 399.6233496142.

The spelling of 63819378 in words is "sixty-three million, eight hundred nineteen thousand, three hundred seventy-eight".