401561190 has 24 divisors (see below), whose sum is σ = 1044059328. Its totient is φ = 107082960.

The previous prime is 401561183. The next prime is 401561191. The reversal of 401561190 is 91165104.

401561190 is a `hidden beast` number, since 40 + 1 + 5 + 611 + 9 + 0 = 666.

It is a super-2 number, since 2×401561190² = 322502778628432200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401561191) 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 11 ways as a sum of consecutive naturals, for example, 2230806 + ... + 2230985.

It is an arithmetic number, because the mean of its divisors is an integer number (43502472).

Almost surely, 2^401561190 is an apocalyptic number.

401561190 is an abundant number, since it is smaller than the sum of its proper divisors (642498138).

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

401561190 is a wasteful number, since it uses less digits than its factorization.

401561190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461804 (or 4461801 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 401561190 is about 20038.9917411031. The cubic root of 401561190 is about 737.7636341780.

The spelling of 401561190 in words is "four hundred one million, five hundred sixty-one thousand, one hundred ninety".