166309149 has 8 divisors (see below), whose sum is σ = 222018912. Its totient is φ = 110736080.

The previous prime is 166309139. The next prime is 166309153. The reversal of 166309149 is 941903661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166309149 - 2¹⁵ = 166276381 is a prime.

It is a super-2 number, since 2×166309149² = 55317466082208402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166309139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31299 + ... + 36224.

It is an arithmetic number, because the mean of its divisors is an integer number (27752364).

Almost surely, 2^166309149 is an apocalyptic number.

It is an amenable number.

166309149 is a deficient number, since it is larger than the sum of its proper divisors (55709763).

166309149 is an equidigital number, since it uses as much as digits as its factorization.

166309149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68347.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 166309149 is about 12896.0904540872. The cubic root of 166309149 is about 549.9274273390.

The spelling of 166309149 in words is "one hundred sixty-six million, three hundred nine thousand, one hundred forty-nine".