491651092 has 24 divisors (see below), whose sum is σ = 877153760. Its totient is φ = 241068960.

The previous prime is 491651063. The next prime is 491651093. The reversal of 491651092 is 290156194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491651093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57367 + ... + 65377.

Almost surely, 2^491651092 is an apocalyptic number.

It is an amenable number.

491651092 is a deficient number, since it is larger than the sum of its proper divisors (385502668).

491651092 is a wasteful number, since it uses less digits than its factorization.

491651092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311 (or 8309 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 491651092 is about 22173.2066242120. The cubic root of 491651092 is about 789.2580182856.

The spelling of 491651092 in words is "four hundred ninety-one million, six hundred fifty-one thousand, ninety-two".