378583819 has 4 divisors (see below), whose sum is σ = 381124800. Its totient is φ = 376042840.

The previous prime is 378583817. The next prime is 378583837. The reversal of 378583819 is 918385873.

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 378583819 - 2¹ = 378583817 is a prime.

It is a super-2 number, since 2×378583819² = 286651416017249522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378583817) 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, 1270267 + ... + 1270564.

It is an arithmetic number, because the mean of its divisors is an integer number (95281200).

Almost surely, 2^378583819 is an apocalyptic number.

378583819 is a deficient number, since it is larger than the sum of its proper divisors (2540981).

378583819 is a wasteful number, since it uses less digits than its factorization.

378583819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540980.

The product of its digits is 1451520, while the sum is 52.

The square root of 378583819 is about 19457.2305069349. The cubic root of 378583819 is about 723.4147329708.

The spelling of 378583819 in words is "three hundred seventy-eight million, five hundred eighty-three thousand, eight hundred nineteen".