378895957439 has 4 divisors (see below), whose sum is σ = 381086107656. Its totient is φ = 376705807224.

The previous prime is 378895957403. The next prime is 378895957459. The reversal of 378895957439 is 934759598873.

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 378895957439 - 2⁸ = 378895957183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378895957439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378895957459) 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, 1095074849 + ... + 1095075194.

It is an arithmetic number, because the mean of its divisors is an integer number (95271526914).

Almost surely, 2^378895957439 is an apocalyptic number.

378895957439 is a deficient number, since it is larger than the sum of its proper divisors (2190150217).

378895957439 is a wasteful number, since it uses less digits than its factorization.

378895957439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190150216.

The product of its digits is 2057529600, while the sum is 77.

The spelling of 378895957439 in words is "three hundred seventy-eight billion, eight hundred ninety-five million, nine hundred fifty-seven thousand, four hundred thirty-nine".