401945188 has 24 divisors (see below), whose sum is σ = 710186400. Its totient is φ = 199042368.

The previous prime is 401945153. The next prime is 401945189. The reversal of 401945188 is 881549104.

It is a self number, because there is not a number n which added to its sum of digits gives 401945188.

It is not an unprimeable number, because it can be changed into a prime (401945189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365856 + ... + 366952.

It is an arithmetic number, because the mean of its divisors is an integer number (29591100).

Almost surely, 2^401945188 is an apocalyptic number.

It is an amenable number.

401945188 is a deficient number, since it is larger than the sum of its proper divisors (308241212).

401945188 is a wasteful number, since it uses less digits than its factorization.

401945188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 401945188 is about 20048.5707221238. The cubic root of 401945188 is about 737.9987245469.

The spelling of 401945188 in words is "four hundred one million, nine hundred forty-five thousand, one hundred eighty-eight".