2475681820 has 24 divisors (see below), whose sum is σ = 5424973344. Its totient is φ = 947217216.

The previous prime is 2475681811. The next prime is 2475681823. The reversal of 2475681820 is 281865742.

It is a happy number.

2475681820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2475681820² = 12258000947757024800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2475681823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2690499 + ... + 2691418.

It is an arithmetic number, because the mean of its divisors is an integer number (226040556).

Almost surely, 2^2475681820 is an apocalyptic number.

2475681820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2475681820 is an abundant number, since it is smaller than the sum of its proper divisors (2949291524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2475681820 is a wasteful number, since it uses less digits than its factorization.

2475681820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381949 (or 5381947 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 2475681820 is about 49756.2239322881. The cubic root of 2475681820 is about 1352.7938155103.

The spelling of 2475681820 in words is "two billion, four hundred seventy-five million, six hundred eighty-one thousand, eight hundred twenty".