4257641398 has 8 divisors (see below), whose sum is σ = 6762136392. Its totient is φ = 2003595936.

The previous prime is 4257641383. The next prime is 4257641407. The reversal of 4257641398 is 8931467524.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62612340 + ... + 62612407.

It is an arithmetic number, because the mean of its divisors is an integer number (845267049).

Almost surely, 2^4257641398 is an apocalyptic number.

4257641398 is a deficient number, since it is larger than the sum of its proper divisors (2504494994).

4257641398 is a wasteful number, since it uses less digits than its factorization.

4257641398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125224766.

The product of its digits is 1451520, while the sum is 49.

The square root of 4257641398 is about 65250.6045795746. The cubic root of 4257641398 is about 1620.7761101111.

The spelling of 4257641398 in words is "four billion, two hundred fifty-seven million, six hundred forty-one thousand, three hundred ninety-eight".