166393051 has 8 divisors (see below), whose sum is σ = 191073600. Its totient is φ = 143304840.

The previous prime is 166393021. The next prime is 166393099. The reversal of 166393051 is 150393661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166393051 - 2²¹ = 164295899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166392998 and 166393016.

It is not an unprimeable number, because it can be changed into a prime (166393021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397861 + ... + 398278.

It is an arithmetic number, because the mean of its divisors is an integer number (23884200).

Almost surely, 2^166393051 is an apocalyptic number.

166393051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166393051 is a deficient number, since it is larger than the sum of its proper divisors (24680549).

166393051 is a wasteful number, since it uses less digits than its factorization.

166393051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796169.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 166393051 is about 12899.3430452872. The cubic root of 166393051 is about 550.0198901898.

The spelling of 166393051 in words is "one hundred sixty-six million, three hundred ninety-three thousand, fifty-one".