228191349126 has 32 divisors (see below), whose sum is σ = 491577166080. Its totient is φ = 70200136224.

The previous prime is 228191348989. The next prime is 228191349143. The reversal of 228191349126 is 621943191822.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180441 + ... + 699243.

It is an arithmetic number, because the mean of its divisors is an integer number (15361786440).

Almost surely, 2^228191349126 is an apocalyptic number.

228191349126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

228191349126 is an abundant number, since it is smaller than the sum of its proper divisors (263385816954).

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

228191349126 is a wasteful number, since it uses less digits than its factorization.

228191349126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524460.

The product of its digits is 373248, while the sum is 48.

The spelling of 228191349126 in words is "two hundred twenty-eight billion, one hundred ninety-one million, three hundred forty-nine thousand, one hundred twenty-six".