166495040 has 28 divisors (see below), whose sum is σ = 396467076. Its totient is φ = 66597888.

The previous prime is 166495031. The next prime is 166495099. The reversal of 166495040 is 40594661.

It can be written as a sum of positive squares in 2 ways, for example, as 83028544 + 83466496 = 9112^2 + 9136^2 .

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 259829 + ... + 260468.

Almost surely, 2^166495040 is an apocalyptic number.

166495040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166495040 is an abundant number, since it is smaller than the sum of its proper divisors (229972036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166495040 is an equidigital number, since it uses as much as digits as its factorization.

166495040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520314 (or 520304 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 166495040 is about 12903.2957030365. The cubic root of 166495040 is about 550.1322436825.

The spelling of 166495040 in words is "one hundred sixty-six million, four hundred ninety-five thousand, forty".