491609588 has 12 divisors (see below), whose sum is σ = 860473152. Its totient is φ = 245760120.

The previous prime is 491609579. The next prime is 491609597. The reversal of 491609588 is 885906194.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (491609579) and next prime (491609597).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32981 + ... + 45507.

It is an arithmetic number, because the mean of its divisors is an integer number (71706096).

Almost surely, 2^491609588 is an apocalyptic number.

It is an amenable number.

491609588 is a deficient number, since it is larger than the sum of its proper divisors (368863564).

491609588 is a wasteful number, since it uses less digits than its factorization.

491609588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22342 (or 22340 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 491609588 is about 22172.2707001335. The cubic root of 491609588 is about 789.2358085742.

The spelling of 491609588 in words is "four hundred ninety-one million, six hundred nine thousand, five hundred eighty-eight".