166241649 has 16 divisors (see below), whose sum is σ = 253532160. Its totient is φ = 94915920.

The previous prime is 166241639. The next prime is 166241681. The reversal of 166241649 is 946142661.

166241649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166241649 - 2⁴ = 166241633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166241609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30472 + ... + 35510.

It is an arithmetic number, because the mean of its divisors is an integer number (15845760).

Almost surely, 2^166241649 is an apocalyptic number.

It is an amenable number.

166241649 is a deficient number, since it is larger than the sum of its proper divisors (87290511).

166241649 is a wasteful number, since it uses less digits than its factorization.

166241649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620.

The product of its digits is 62208, while the sum is 39.

The square root of 166241649 is about 12893.4731162709. The cubic root of 166241649 is about 549.8530174731.

The spelling of 166241649 in words is "one hundred sixty-six million, two hundred forty-one thousand, six hundred forty-nine".