401816180 has 24 divisors (see below), whose sum is σ = 888226080. Its totient is φ = 152267040.

The previous prime is 401816143. The next prime is 401816213. The reversal of 401816180 is 81618104.

It is a super-2 number, since 2×401816180² = 322912485019584800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528326 + ... + 529085.

It is an arithmetic number, because the mean of its divisors is an integer number (37009420).

Almost surely, 2^401816180 is an apocalyptic number.

It is an amenable number.

401816180 is an abundant number, since it is smaller than the sum of its proper divisors (486409900).

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

401816180 is a wasteful number, since it uses less digits than its factorization.

401816180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057439 (or 1057437 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 401816180 is about 20045.3530774591. The cubic root of 401816180 is about 737.9197602751.

The spelling of 401816180 in words is "four hundred one million, eight hundred sixteen thousand, one hundred eighty".