228820343818 has 16 divisors (see below), whose sum is σ = 374696470656. Its totient is φ = 103936141440.

The previous prime is 228820343809. The next prime is 228820343819. The reversal of 228820343818 is 818343028822.

It is not an unprimeable number, because it can be changed into a prime (228820343819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3623271 + ... + 3685882.

It is an arithmetic number, because the mean of its divisors is an integer number (23418529416).

Almost surely, 2^228820343818 is an apocalyptic number.

228820343818 is a deficient number, since it is larger than the sum of its proper divisors (145876126838).

228820343818 is a wasteful number, since it uses less digits than its factorization.

228820343818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310589.

The product of its (nonzero) digits is 1179648, while the sum is 49.

The spelling of 228820343818 in words is "two hundred twenty-eight billion, eight hundred twenty million, three hundred forty-three thousand, eight hundred eighteen".