11438228180 has 24 divisors (see below), whose sum is σ = 24097034472. Its totient is φ = 4560671232.

The previous prime is 11438228173. The next prime is 11438228251. The reversal of 11438228180 is 8182283411.

It can be written as a sum of positive squares in 4 ways, for example, as 167857936 + 11270370244 = 12956^2 + 106162^2 .

It is a super-2 number, since 2×11438228180² (a number of 21 digits) contains 22 as substring.

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, 907337 + ... + 919856.

It is an arithmetic number, because the mean of its divisors is an integer number (1004043103).

Almost surely, 2^11438228180 is an apocalyptic number.

11438228180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11438228180 is an abundant number, since it is smaller than the sum of its proper divisors (12658806292).

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

11438228180 is a wasteful number, since it uses less digits than its factorization.

11438228180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827515 (or 1827513 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The spelling of 11438228180 in words is "eleven billion, four hundred thirty-eight million, two hundred twenty-eight thousand, one hundred eighty".