2663815923 has 8 divisors (see below), whose sum is σ = 3946394000. Its totient is φ = 1775877264.

The previous prime is 2663815907. The next prime is 2663815933. The reversal of 2663815923 is 3295183662.

2663815923 is a `hidden beast` number, since 2 + 6 + 638 + 1 + 5 + 9 + 2 + 3 = 666.

It is not a de Polignac number, because 2663815923 - 2⁴ = 2663815907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2663815933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49329898 + ... + 49329951.

It is an arithmetic number, because the mean of its divisors is an integer number (493299250).

Almost surely, 2^2663815923 is an apocalyptic number.

2663815923 is a deficient number, since it is larger than the sum of its proper divisors (1282578077).

2663815923 is an equidigital number, since it uses as much as digits as its factorization.

2663815923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98659858 (or 98659852 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 2663815923 is about 51612.1683617342. The cubic root of 2663815923 is about 1386.2282236948.

The spelling of 2663815923 in words is "two billion, six hundred sixty-three million, eight hundred fifteen thousand, nine hundred twenty-three".