228599017638 has 16 divisors (see below), whose sum is σ = 459723993456. Its totient is φ = 75778679520.

The previous prime is 228599017613. The next prime is 228599017649. The reversal of 228599017638 is 836710995822.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105247081 + ... + 105249252.

It is an arithmetic number, because the mean of its divisors is an integer number (28732749591).

Almost surely, 2^228599017638 is an apocalyptic number.

228599017638 is an abundant number, since it is smaller than the sum of its proper divisors (231124975818).

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

228599017638 is a wasteful number, since it uses less digits than its factorization.

228599017638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210496519.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 228599017638 in words is "two hundred twenty-eight billion, five hundred ninety-nine million, seventeen thousand, six hundred thirty-eight".