401010166 has 4 divisors (see below), whose sum is σ = 601515252. Its totient is φ = 200505082.

The previous prime is 401010163. The next prime is 401010179. The reversal of 401010166 is 661010104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401010163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100252540 + ... + 100252543.

It is an arithmetic number, because the mean of its divisors is an integer number (150378813).

Almost surely, 2^401010166 is an apocalyptic number.

401010166 is a deficient number, since it is larger than the sum of its proper divisors (200505086).

401010166 is a wasteful number, since it uses less digits than its factorization.

401010166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200505085.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 401010166 is about 20025.2382257990. The cubic root of 401010166 is about 737.4260255593.

The spelling of 401010166 in words is "four hundred one million, ten thousand, one hundred sixty-six".