378983867 has 4 divisors (see below), whose sum is σ = 386134560. Its totient is φ = 371833176.

The previous prime is 378983863. The next prime is 378983909. The reversal of 378983867 is 768389873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 768389873 = 22651 ⋅33923.

It is a cyclic number.

It is not a de Polignac number, because 378983867 - 2² = 378983863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378983863) 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, 3575267 + ... + 3575372.

It is an arithmetic number, because the mean of its divisors is an integer number (96533640).

Almost surely, 2^378983867 is an apocalyptic number.

378983867 is a deficient number, since it is larger than the sum of its proper divisors (7150693).

378983867 is an equidigital number, since it uses as much as digits as its factorization.

378983867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7150692.

The product of its digits is 12192768, while the sum is 59.

The square root of 378983867 is about 19467.5079812492. The cubic root of 378983867 is about 723.6694530849.

The spelling of 378983867 in words is "three hundred seventy-eight million, nine hundred eighty-three thousand, eight hundred sixty-seven".