2403778819 has 8 divisors (see below), whose sum is σ = 2648887472. Its totient is φ = 2167270560.

The previous prime is 2403778799. The next prime is 2403778837. The reversal of 2403778819 is 9188773042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2403778819 is a prime.

It is a super-2 number, since 2×2403778819² = 11556305221346069522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2403778849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2149512 + ... + 2150629.

It is an arithmetic number, because the mean of its divisors is an integer number (331110934).

Almost surely, 2^2403778819 is an apocalyptic number.

2403778819 is a deficient number, since it is larger than the sum of its proper divisors (245108653).

2403778819 is a wasteful number, since it uses less digits than its factorization.

2403778819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300197.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 2403778819 is about 49028.3470963483. The cubic root of 2403778819 is about 1339.5682166786.

The spelling of 2403778819 in words is "two billion, four hundred three million, seven hundred seventy-eight thousand, eight hundred nineteen".