2475400638 has 16 divisors (see below), whose sum is σ = 4954897296. Its totient is φ = 824450880.

The previous prime is 2475400633. The next prime is 2475400643. The reversal of 2475400638 is 8360045742.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2475400633) and next prime (2475400643).

It is a super-2 number, since 2×2475400638² = 12255216637221614088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2475400596 and 2475400605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2475400633) 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, 162783 + ... + 177338.

It is an arithmetic number, because the mean of its divisors is an integer number (309681081).

Almost surely, 2^2475400638 is an apocalyptic number.

2475400638 is an abundant number, since it is smaller than the sum of its proper divisors (2479496658).

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

2475400638 is a wasteful number, since it uses less digits than its factorization.

2475400638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341339.

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 2475400638 is about 49753.3982557976. The cubic root of 2475400638 is about 1352.7425978795.

The spelling of 2475400638 in words is "two billion, four hundred seventy-five million, four hundred thousand, six hundred thirty-eight".