166015530 has 24 divisors (see below), whose sum is σ = 431640612. Its totient is φ = 44270784.

The previous prime is 166015477. The next prime is 166015583. The reversal of 166015530 is 35510661.

It is a happy number.

166015530 is a `hidden beast` number, since 1 + 6 + 601 + 5 + 53 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (166015477) and next prime (166015583).

It can be written as a sum of positive squares in 2 ways, for example, as 165714129 + 301401 = 12873^2 + 549^2 .

It is a super-2 number, since 2×166015530² = 55122312402361800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166015494 and 166015503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 922219 + ... + 922398.

Almost surely, 2^166015530 is an apocalyptic number.

166015530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166015530 is an abundant number, since it is smaller than the sum of its proper divisors (265625082).

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

166015530 is a wasteful number, since it uses less digits than its factorization.

166015530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844630 (or 1844627 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 166015530 is about 12884.7013935132. The cubic root of 166015530 is about 549.6036041855.

The spelling of 166015530 in words is "one hundred sixty-six million, fifteen thousand, five hundred thirty".