391141880090 has 16 divisors (see below), whose sum is σ = 758213490888. Its totient is φ = 144421617216.

The previous prime is 391141880089. The next prime is 391141880111. The reversal of 391141880090 is 90088141193.

It can be written as a sum of positive squares in 4 ways, for example, as 339284115361 + 51857764729 = 582481^2 + 227723^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1504391717 + ... + 1504391976.

Almost surely, 2^391141880090 is an apocalyptic number.

391141880090 is a deficient number, since it is larger than the sum of its proper divisors (367071610798).

391141880090 is a wasteful number, since it uses less digits than its factorization.

391141880090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008783713.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 391141880090 in words is "three hundred ninety-one billion, one hundred forty-one million, eight hundred eighty thousand, ninety".