491165068 has 6 divisors (see below), whose sum is σ = 859538876. Its totient is φ = 245582532.

The previous prime is 491165063. The next prime is 491165089. The reversal of 491165068 is 860561194.

It is a self number, because there is not a number n which added to its sum of digits gives 491165068.

It is not an unprimeable number, because it can be changed into a prime (491165063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61395630 + ... + 61395637.

Almost surely, 2^491165068 is an apocalyptic number.

It is an amenable number.

491165068 is a deficient number, since it is larger than the sum of its proper divisors (368373808).

491165068 is a wasteful number, since it uses less digits than its factorization.

491165068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122791271 (or 122791269 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 491165068 is about 22162.2442004414. The cubic root of 491165068 is about 788.9978576300.

The spelling of 491165068 in words is "four hundred ninety-one million, one hundred sixty-five thousand, sixty-eight".