166462537 has 2 divisors, whose sum is σ = 166462538. Its totient is φ = 166462536.

The previous prime is 166462507. The next prime is 166462561. The reversal of 166462537 is 735264661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109746576 + 56715961 = 10476^2 + 7531^2 .

It is an emirp because it is prime and its reverse (735264661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166462537 - 2¹⁹ = 165938249 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166462537.

It is not a weakly prime, because it can be changed into another prime (166462507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83231268 + 83231269.

It is an arithmetic number, because the mean of its divisors is an integer number (83231269).

Almost surely, 2^166462537 is an apocalyptic number.

It is an amenable number.

166462537 is a deficient number, since it is larger than the sum of its proper divisors (1).

166462537 is an equidigital number, since it uses as much as digits as its factorization.

166462537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 166462537 is about 12902.0361571343. The cubic root of 166462537 is about 550.0964425919.

The spelling of 166462537 in words is "one hundred sixty-six million, four hundred sixty-two thousand, five hundred thirty-seven".