166154005 has 8 divisors (see below), whose sum is σ = 211113432. Its totient is φ = 125104128.

The previous prime is 166154003. The next prime is 166154029. The reversal of 166154005 is 500451661.

It can be written as a sum of positive squares in 4 ways, for example, as 18507204 + 147646801 = 4302^2 + 12151^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 166154005 - 2¹ = 166154003 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 7 ways as a sum of consecutive naturals, for example, 977292 + ... + 977461.

It is an arithmetic number, because the mean of its divisors is an integer number (26389179).

Almost surely, 2^166154005 is an apocalyptic number.

It is an amenable number.

166154005 is a deficient number, since it is larger than the sum of its proper divisors (44959427).

166154005 is a wasteful number, since it uses less digits than its factorization.

166154005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954775.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 166154005 is about 12890.0738942800. The cubic root of 166154005 is about 549.7563714368.

The spelling of 166154005 in words is "one hundred sixty-six million, one hundred fifty-four thousand, five".