166123037 has 2 divisors, whose sum is σ = 166123038. Its totient is φ = 166123036.

The previous prime is 166123033. The next prime is 166123063. The reversal of 166123037 is 730321661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165739876 + 383161 = 12874^2 + 619^2 .

It is an emirp because it is prime and its reverse (730321661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166123037 - 2² = 166123033 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166123033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83061518 + 83061519.

It is an arithmetic number, because the mean of its divisors is an integer number (83061519).

Almost surely, 2^166123037 is an apocalyptic number.

It is an amenable number.

166123037 is a deficient number, since it is larger than the sum of its proper divisors (1).

166123037 is an equidigital number, since it uses as much as digits as its factorization.

166123037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 166123037 is about 12888.8726039169. The cubic root of 166123037 is about 549.7222145450.

Adding to 166123037 its reverse (730321661), we get a palindrome (896444698).

The spelling of 166123037 in words is "one hundred sixty-six million, one hundred twenty-three thousand, thirty-seven".