491487109492 has 12 divisors (see below), whose sum is σ = 860424475456. Its totient is φ = 245651545080.

The previous prime is 491487109483. The next prime is 491487109499. The reversal of 491487109492 is 294901784194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491487109499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22990398 + ... + 23011765.

Almost surely, 2^491487109492 is an apocalyptic number.

It is an amenable number.

491487109492 is a deficient number, since it is larger than the sum of its proper divisors (368937365964).

491487109492 is a wasteful number, since it uses less digits than its factorization.

491487109492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46004838 (or 46004836 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 491487109492 in words is "four hundred ninety-one billion, four hundred eighty-seven million, one hundred nine thousand, four hundred ninety-two".