11438228173 has 2 divisors, whose sum is σ = 11438228174. Its totient is φ = 11438228172.

The previous prime is 11438228159. The next prime is 11438228251. The reversal of 11438228173 is 37182283411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11142491364 + 295736809 = 105558^2 + 17197^2 .

It is a cyclic number.

It is not a de Polignac number, because 11438228173 - 2¹³ = 11438219981 is a prime.

It is a super-2 number, since 2×11438228173² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11438228773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5719114086 + 5719114087.

It is an arithmetic number, because the mean of its divisors is an integer number (5719114087).

Almost surely, 2^11438228173 is an apocalyptic number.

It is an amenable number.

11438228173 is a deficient number, since it is larger than the sum of its proper divisors (1).

11438228173 is an equidigital number, since it uses as much as digits as its factorization.

11438228173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The spelling of 11438228173 in words is "eleven billion, four hundred thirty-eight million, two hundred twenty-eight thousand, one hundred seventy-three".