491616126 has 12 divisors (see below), whose sum is σ = 1065168312. Its totient is φ = 163872036.

The previous prime is 491616109. The next prime is 491616133. The reversal of 491616126 is 621616194.

491616126 is a `hidden beast` number, since 491 + 6 + 161 + 2 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13655986 + ... + 13656021.

It is an arithmetic number, because the mean of its divisors is an integer number (88764026).

Almost surely, 2^491616126 is an apocalyptic number.

491616126 is an abundant number, since it is smaller than the sum of its proper divisors (573552186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491616126 is a wasteful number, since it uses less digits than its factorization.

491616126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27312015 (or 27312012 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 491616126 is about 22172.4181360536. The cubic root of 491616126 is about 789.2393072860.

The spelling of 491616126 in words is "four hundred ninety-one million, six hundred sixteen thousand, one hundred twenty-six".