2378819 has 4 divisors (see below), whose sum is σ = 2504040. Its totient is φ = 2253600.

The previous prime is 2378807. The next prime is 2378843. The reversal of 2378819 is 9188732.

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-2378819 is a prime.

It is a super-2 number, since 2×2378819² = 11317559669522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2378869) 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, 62582 + ... + 62619.

It is an arithmetic number, because the mean of its divisors is an integer number (626010).

2^2378819 is an apocalyptic number.

2378819 is a deficient number, since it is larger than the sum of its proper divisors (125221).

2378819 is a wasteful number, since it uses less digits than its factorization.

2378819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125220.

The product of its digits is 24192, while the sum is 38.

The square root of 2378819 is about 1542.3420502599. The cubic root of 2378819 is about 133.4915573034.

The spelling of 2378819 in words is "two million, three hundred seventy-eight thousand, eight hundred nineteen".