166348801 has 2 divisors, whose sum is σ = 166348802. Its totient is φ = 166348800.

The previous prime is 166348771. The next prime is 166348829. The reversal of 166348801 is 108843661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84916225 + 81432576 = 9215^2 + 9024^2 .

It is an emirp because it is prime and its reverse (108843661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166348801 - 2¹³ = 166340609 is a prime.

It is not a weakly prime, because it can be changed into another prime (166348841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83174400 + 83174401.

It is an arithmetic number, because the mean of its divisors is an integer number (83174401).

Almost surely, 2^166348801 is an apocalyptic number.

It is an amenable number.

166348801 is a deficient number, since it is larger than the sum of its proper divisors (1).

166348801 is an equidigital number, since it uses as much as digits as its factorization.

166348801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 166348801 is about 12897.6277276094. The cubic root of 166348801 is about 549.9711290630.

The spelling of 166348801 in words is "one hundred sixty-six million, three hundred forty-eight thousand, eight hundred one".