378811478419 has 4 divisors (see below), whose sum is σ = 413248885560. Its totient is φ = 344374071280.

The previous prime is 378811478399. The next prime is 378811478443. The reversal of 378811478419 is 914874118873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378811478419 - 2¹³ = 378811470227 is a prime.

It is a super-2 number, since 2×378811478419² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378811478219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17218703554 + ... + 17218703575.

It is an arithmetic number, because the mean of its divisors is an integer number (103312221390).

Almost surely, 2^378811478419 is an apocalyptic number.

378811478419 is a deficient number, since it is larger than the sum of its proper divisors (34437407141).

378811478419 is a wasteful number, since it uses less digits than its factorization.

378811478419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34437407140.

The product of its digits is 10838016, while the sum is 61.

The spelling of 378811478419 in words is "three hundred seventy-eight billion, eight hundred eleven million, four hundred seventy-eight thousand, four hundred nineteen".