2478650399 has 16 divisors (see below), whose sum is σ = 2546297856. Its totient is φ = 2412093600.

The previous prime is 2478650341. The next prime is 2478650413. The reversal of 2478650399 is 9930568742.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2478650399 - 2⁸ = 2478650143 is a prime.

It is a super-2 number, since 2×2478650399² = 12287415600925718402, which contains 22 as substring.

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 2478650399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478650309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3273929 + ... + 3274685.

It is an arithmetic number, because the mean of its divisors is an integer number (159143616).

Almost surely, 2^2478650399 is an apocalyptic number.

2478650399 is a deficient number, since it is larger than the sum of its proper divisors (67647457).

2478650399 is a wasteful number, since it uses less digits than its factorization.

2478650399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The square root of 2478650399 is about 49786.0462278338. The cubic root of 2478650399 is about 1353.3343092049.

The spelling of 2478650399 in words is "two billion, four hundred seventy-eight million, six hundred fifty thousand, three hundred ninety-nine".