401529018 has 64 divisors (see below), whose sum is σ = 938252160. Its totient is φ = 113203200.

The previous prime is 401529013. The next prime is 401529059. The reversal of 401529018 is 810925104.

It is a happy number.

It is a super-2 number, since 2×401529018² = 322451104592088648, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (401529013) 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 31 ways as a sum of consecutive naturals, for example, 97848 + ... + 101868.

It is an arithmetic number, because the mean of its divisors is an integer number (14660190).

Almost surely, 2^401529018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401529018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469126080).

401529018 is an abundant number, since it is smaller than the sum of its proper divisors (536723142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401529018 is a wasteful number, since it uses less digits than its factorization.

401529018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 401529018 is about 20038.1889900260. The cubic root of 401529018 is about 737.7439311073.

It can be divided in two parts, 4015 and 29018, that added together give a palindrome (33033).

The spelling of 401529018 in words is "four hundred one million, five hundred twenty-nine thousand, eighteen".