641181146 has 16 divisors (see below), whose sum is σ = 1025680320. Its totient is φ = 299559360.

The previous prime is 641181139. The next prime is 641181161.

641181146 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×641181146² = 822226523971746632, which contains 22 as substring.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 63110 + ... + 72561.

It is an arithmetic number, because the mean of its divisors is an integer number (64105020).

Almost surely, 2^641181146 is an apocalyptic number.

641181146 is a deficient number, since it is larger than the sum of its proper divisors (384499174).

641181146 is a wasteful number, since it uses less digits than its factorization.

641181146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135829.

The product of its digits is 4608, while the sum is 32.

The square root of 641181146 is about 25321.5549680504. The cubic root of 641181146 is about 862.3036964438.

The spelling of 641181146 in words is "six hundred forty-one million, one hundred eighty-one thousand, one hundred forty-six".