166036415 has 4 divisors (see below), whose sum is σ = 199243704. Its totient is φ = 132829128.

The previous prime is 166036393. The next prime is 166036417. The reversal of 166036415 is 514630661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514630661 = 8291 ⋅62071.

It is a cyclic number.

It is not a de Polignac number, because 166036415 - 2¹⁶ = 165970879 is a prime.

It is a super-2 number, since 2×166036415² = 55136182212104450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166036417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16603637 + ... + 16603646.

It is an arithmetic number, because the mean of its divisors is an integer number (49810926).

Almost surely, 2^166036415 is an apocalyptic number.

166036415 is a deficient number, since it is larger than the sum of its proper divisors (33207289).

166036415 is an equidigital number, since it uses as much as digits as its factorization.

166036415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33207288.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 166036415 is about 12885.5118253021. The cubic root of 166036415 is about 549.6266502021.

The spelling of 166036415 in words is "one hundred sixty-six million, thirty-six thousand, four hundred fifteen".