1166228137 has 2 divisors, whose sum is σ = 1166228138. Its totient is φ = 1166228136.

The previous prime is 1166228131. The next prime is 1166228171. The reversal of 1166228137 is 7318226611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658897561 + 507330576 = 25669^2 + 22524^2 .

It is an emirp because it is prime and its reverse (7318226611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166228137 - 2¹⁹ = 1165703849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166228096 and 1166228105.

It is not a weakly prime, because it can be changed into another prime (1166228131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583114068 + 583114069.

It is an arithmetic number, because the mean of its divisors is an integer number (583114069).

Almost surely, 2^1166228137 is an apocalyptic number.

It is an amenable number.

1166228137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166228137 is an equidigital number, since it uses as much as digits as its factorization.

1166228137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 1166228137 is about 34150.0825328432. The cubic root of 1166228137 is about 1052.5946825525.

The spelling of 1166228137 in words is "one billion, one hundred sixty-six million, two hundred twenty-eight thousand, one hundred thirty-seven".