6402542338 has 16 divisors (see below), whose sum is σ = 10366937280. Its totient is φ = 2956495696.

The previous prime is 6402542323. The next prime is 6402542351. The reversal of 6402542338 is 8332452046.

It is a junction number, because it is equal to n+sod(n) for n = 6402542297 and 6402542306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398420 + ... + 2401087.

It is an arithmetic number, because the mean of its divisors is an integer number (647933580).

Almost surely, 2^6402542338 is an apocalyptic number.

6402542338 is a deficient number, since it is larger than the sum of its proper divisors (3964394942).

6402542338 is a wasteful number, since it uses less digits than its factorization.

6402542338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4799561.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 6402542338 is about 80015.8880348147. Note that the first 3 decimals coincide. The cubic root of 6402542338 is about 1856.8813443925.

The spelling of 6402542338 in words is "six billion, four hundred two million, five hundred forty-two thousand, three hundred thirty-eight".