10118391228 has 216 divisors, whose sum is σ = 30069080496. Its totient is φ = 2856606720.

The previous prime is 10118391169. The next prime is 10118391251. The reversal of 10118391228 is 82219381101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 10118391192 and 10118391201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7922926 + ... + 7924202.

It is an arithmetic number, because the mean of its divisors is an integer number (139208706).

Almost surely, 2^10118391228 is an apocalyptic number.

10118391228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10118391228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15034540248).

10118391228 is an abundant number, since it is smaller than the sum of its proper divisors (19950689268).

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

10118391228 is a wasteful number, since it uses less digits than its factorization.

10118391228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1417 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The spelling of 10118391228 in words is "ten billion, one hundred eighteen million, three hundred ninety-one thousand, two hundred twenty-eight".