491135294 has 48 divisors (see below), whose sum is σ = 867156480. Its totient is φ = 207735840.

The previous prime is 491135291. The next prime is 491135297. The reversal of 491135294 is 492531194.

It is an interprime number because it is at equal distance from previous prime (491135291) and next prime (491135297).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491135291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197849 + ... + 200315.

It is an arithmetic number, because the mean of its divisors is an integer number (18065760).

Almost surely, 2^491135294 is an apocalyptic number.

491135294 is a deficient number, since it is larger than the sum of its proper divisors (376021186).

491135294 is a wasteful number, since it uses less digits than its factorization.

491135294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545 (or 2532 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 491135294 is about 22161.5724622600. The cubic root of 491135294 is about 788.9819145195.

The spelling of 491135294 in words is "four hundred ninety-one million, one hundred thirty-five thousand, two hundred ninety-four".