491686194 has 32 divisors (see below), whose sum is σ = 1003757184. Its totient is φ = 160509440.

The previous prime is 491686183. The next prime is 491686201.

491686194 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235234 + ... + 237314.

It is an arithmetic number, because the mean of its divisors is an integer number (31367412).

Almost surely, 2^491686194 is an apocalyptic number.

491686194 is an abundant number, since it is smaller than the sum of its proper divisors (512070990).

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

491686194 is a wasteful number, since it uses less digits than its factorization.

491686194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882.

The product of its digits is 373248, while the sum is 48.

The square root of 491686194 is about 22173.9981509876. The cubic root of 491686194 is about 789.2768011692.

The spelling of 491686194 in words is "four hundred ninety-one million, six hundred eighty-six thousand, one hundred ninety-four".