641130090 has 32 divisors (see below), whose sum is σ = 1553100480. Its totient is φ = 169369344.

The previous prime is 641130089. The next prime is 641130121. The reversal of 641130090 is 90031146.

It is a super-2 number, since 2×641130090² = 822095584606816200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641130090.

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 15 ways as a sum of consecutive naturals, for example, 96655 + ... + 103074.

It is an arithmetic number, because the mean of its divisors is an integer number (48534390).

Almost surely, 2^641130090 is an apocalyptic number.

641130090 is an abundant number, since it is smaller than the sum of its proper divisors (911970390).

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

641130090 is a wasteful number, since it uses less digits than its factorization.

641130090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199846.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 641130090 is about 25320.5467950437. The cubic root of 641130090 is about 862.2808079843.

The spelling of 641130090 in words is "six hundred forty-one million, one hundred thirty thousand, ninety".