166941530 has 80 divisors (see below), whose sum is σ = 372084840. Its totient is φ = 53738496.

The previous prime is 166941527. The next prime is 166941563. The reversal of 166941530 is 35149661.

It can be written as a sum of positive squares in 4 ways, for example, as 166074769 + 866761 = 12887^2 + 931^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 407966 + ... + 408374.

Almost surely, 2^166941530 is an apocalyptic number.

166941530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166941530 is an abundant number, since it is smaller than the sum of its proper divisors (205143310).

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

166941530 is an equidigital number, since it uses as much as digits as its factorization.

166941530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 166941530 is about 12920.5855130485. The cubic root of 166941530 is about 550.6235682379.

The spelling of 166941530 in words is "one hundred sixty-six million, nine hundred forty-one thousand, five hundred thirty".