491800492 has 24 divisors (see below), whose sum is σ = 891376640. Its totient is φ = 237174480.

The previous prime is 491800469. The next prime is 491800493. The reversal of 491800492 is 294008194.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (491800493) 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, 31609 + ... + 44527.

Almost surely, 2^491800492 is an apocalyptic number.

It is an amenable number.

491800492 is a deficient number, since it is larger than the sum of its proper divisors (399576148).

491800492 is a wasteful number, since it uses less digits than its factorization.

491800492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13261 (or 13259 counting only the distinct ones).

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

The square root of 491800492 is about 22176.5752991755. The cubic root of 491800492 is about 789.3379551948.

The spelling of 491800492 in words is "four hundred ninety-one million, eight hundred thousand, four hundred ninety-two".