1641400170 has 64 divisors (see below), whose sum is σ = 4012467840. Its totient is φ = 429631488.

The previous prime is 1641400157. The next prime is 1641400207. The reversal of 1641400170 is 710041461.

It is a self number, because there is not a number n which added to its sum of digits gives 1641400170.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627826 + ... + 630434.

It is an arithmetic number, because the mean of its divisors is an integer number (62694810).

Almost surely, 2^1641400170 is an apocalyptic number.

1641400170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641400170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2006233920).

1641400170 is an abundant number, since it is smaller than the sum of its proper divisors (2371067670).

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

1641400170 is a wasteful number, since it uses less digits than its factorization.

1641400170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1641400170 is about 40514.1971412491. The cubic root of 1641400170 is about 1179.6092189665.

The spelling of 1641400170 in words is "one billion, six hundred forty-one million, four hundred thousand, one hundred seventy".