6432257138 has 8 divisors (see below), whose sum is σ = 9724357632. Its totient is φ = 3190804596.

The previous prime is 6432257107. The next prime is 6432257287. The reversal of 6432257138 is 8317522346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6432257095 and 6432257104.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12661670 + ... + 12662177.

It is an arithmetic number, because the mean of its divisors is an integer number (1215544704).

Almost surely, 2^6432257138 is an apocalyptic number.

6432257138 is a deficient number, since it is larger than the sum of its proper divisors (3292100494).

6432257138 is a wasteful number, since it uses less digits than its factorization.

6432257138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25323976.

The product of its digits is 241920, while the sum is 41.

The square root of 6432257138 is about 80201.3537167547. The cubic root of 6432257138 is about 1859.7495652726.

The spelling of 6432257138 in words is "six billion, four hundred thirty-two million, two hundred fifty-seven thousand, one hundred thirty-eight".