166104749 has 2 divisors, whose sum is σ = 166104750. Its totient is φ = 166104748.

The previous prime is 166104683. The next prime is 166104787. The reversal of 166104749 is 947401661.

It is a happy number.

It is an a-pointer prime, because the next prime (166104787) can be obtained adding 166104749 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86359849 + 79744900 = 9293^2 + 8930^2 .

It is a cyclic number.

It is not a de Polignac number, because 166104749 - 2⁸ = 166104493 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 (166104149) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83052374 + 83052375.

It is an arithmetic number, because the mean of its divisors is an integer number (83052375).

Almost surely, 2^166104749 is an apocalyptic number.

It is an amenable number.

166104749 is a deficient number, since it is larger than the sum of its proper divisors (1).

166104749 is an equidigital number, since it uses as much as digits as its factorization.

166104749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 166104749 is about 12888.1631352183. The cubic root of 166104749 is about 549.7020413670.

The spelling of 166104749 in words is "one hundred sixty-six million, one hundred four thousand, seven hundred forty-nine".