401818170 has 64 divisors (see below), whose sum is σ = 1048360320. Its totient is φ = 97974528.

The previous prime is 401818147. The next prime is 401818177. The reversal of 401818170 is 71818104.

It is a super-2 number, since 2×401818170² = 322915683484297800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (401818177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36916 + ... + 46544.

It is an arithmetic number, because the mean of its divisors is an integer number (16380630).

Almost surely, 2^401818170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401818170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524180160).

401818170 is an abundant number, since it is smaller than the sum of its proper divisors (646542150).

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

401818170 is a wasteful number, since it uses less digits than its factorization.

401818170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9759.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 401818170 is about 20045.4027148371. The cubic root of 401818170 is about 737.9209784589.

The spelling of 401818170 in words is "four hundred one million, eight hundred eighteen thousand, one hundred seventy".