6401808146 has 16 divisors (see below), whose sum is σ = 9777189024. Its totient is φ = 3143132064.

The previous prime is 6401808121. The next prime is 6401808151. The reversal of 6401808146 is 6418081046.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 63440 + ... + 129723.

It is an arithmetic number, because the mean of its divisors is an integer number (611074314).

Almost surely, 2^6401808146 is an apocalyptic number.

6401808146 is a deficient number, since it is larger than the sum of its proper divisors (3375380878).

6401808146 is a wasteful number, since it uses less digits than its factorization.

6401808146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193465.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 6401808146 is about 80011.3001144213. The cubic root of 6401808146 is about 1856.8103642791.

The spelling of 6401808146 in words is "six billion, four hundred one million, eight hundred eight thousand, one hundred forty-six".