166154063 has 4 divisors (see below), whose sum is σ = 166180608. Its totient is φ = 166127520.

The previous prime is 166154029. The next prime is 166154101. The reversal of 166154063 is 360451661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 360451661 = 269 ⋅1339969.

It is a cyclic number.

It is not a de Polignac number, because 166154063 - 2¹² = 166149967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166154003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1895 + ... + 18327.

It is an arithmetic number, because the mean of its divisors is an integer number (41545152).

Almost surely, 2^166154063 is an apocalyptic number.

166154063 is a deficient number, since it is larger than the sum of its proper divisors (26545).

166154063 is a wasteful number, since it uses less digits than its factorization.

166154063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26544.

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

The square root of 166154063 is about 12890.0761440730. The cubic root of 166154063 is about 549.7564354053.

The spelling of 166154063 in words is "one hundred sixty-six million, one hundred fifty-four thousand, sixty-three".