491890204 has 24 divisors (see below), whose sum is σ = 938201040. Its totient is φ = 224289024.

The previous prime is 491890187. The next prime is 491890211. The reversal of 491890204 is 402098194.

It is a happy number.

It is a congruent number.

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, 52669 + ... + 61300.

It is an arithmetic number, because the mean of its divisors is an integer number (39091710).

Almost surely, 2^491890204 is an apocalyptic number.

It is an amenable number.

491890204 is a deficient number, since it is larger than the sum of its proper divisors (446310836).

491890204 is a wasteful number, since it uses less digits than its factorization.

491890204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114069 (or 114067 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 491890204 is about 22178.5978817418. The cubic root of 491890204 is about 789.3859480852.

The spelling of 491890204 in words is "four hundred ninety-one million, eight hundred ninety thousand, two hundred four".