378893400019 has 4 divisors (see below), whose sum is σ = 379070207296. Its totient is φ = 378716592744.

The previous prime is 378893400007. The next prime is 378893400023. The reversal of 378893400019 is 910004398873.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378893400019 is a prime.

It is a super-2 number, since 2×378893400019² (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 (378893400719) 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, 88400424 + ... + 88404709.

It is an arithmetic number, because the mean of its divisors is an integer number (94767551824).

Almost surely, 2^378893400019 is an apocalyptic number.

378893400019 is a deficient number, since it is larger than the sum of its proper divisors (176807277).

378893400019 is a wasteful number, since it uses less digits than its factorization.

378893400019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176807276.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 378893400019 in words is "three hundred seventy-eight billion, eight hundred ninety-three million, four hundred thousand, nineteen".