401845161 has 16 divisors (see below), whose sum is σ = 545799168. Its totient is φ = 262928400.

The previous prime is 401845153. The next prime is 401845181. The reversal of 401845161 is 161548104.

It is not a de Polignac number, because 401845161 - 2³ = 401845153 is a prime.

It is a super-2 number, since 2×401845161² = 322959066838231842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401845181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44196 + ... + 52506.

It is an arithmetic number, because the mean of its divisors is an integer number (34112448).

Almost surely, 2^401845161 is an apocalyptic number.

It is an amenable number.

401845161 is a deficient number, since it is larger than the sum of its proper divisors (143954007).

401845161 is a wasteful number, since it uses less digits than its factorization.

401845161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8612.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 401845161 is about 20046.0759501704. The cubic root of 401845161 is about 737.9375006744.

The spelling of 401845161 in words is "four hundred one million, eight hundred forty-five thousand, one hundred sixty-one".