491061290 has 16 divisors (see below), whose sum is σ = 904467168. Its totient is φ = 191856336.

The previous prime is 491061281. The next prime is 491061301. The reversal of 491061290 is 92160194.

It is a super-2 number, since 2×491061290² = 482282381072928200, which contains 22 as substring.

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, 570572 + ... + 571431.

It is an arithmetic number, because the mean of its divisors is an integer number (56529198).

Almost surely, 2^491061290 is an apocalyptic number.

491061290 is a deficient number, since it is larger than the sum of its proper divisors (413405878).

491061290 is a wasteful number, since it uses less digits than its factorization.

491061290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142053.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 491061290 is about 22159.9027524942. The cubic root of 491061290 is about 788.9422847398.

The spelling of 491061290 in words is "four hundred ninety-one million, sixty-one thousand, two hundred ninety".