491948027 has 4 divisors (see below), whose sum is σ = 494696520. Its totient is φ = 489199536.

The previous prime is 491948011. The next prime is 491948029. The reversal of 491948027 is 720849194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491948027 - 2⁴ = 491948011 is a prime.

It is a super-2 number, since 2×491948027² = 484025722538385458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491948029) 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, 1373978 + ... + 1374335.

It is an arithmetic number, because the mean of its divisors is an integer number (123674130).

Almost surely, 2^491948027 is an apocalyptic number.

491948027 is a deficient number, since it is larger than the sum of its proper divisors (2748493).

491948027 is a wasteful number, since it uses less digits than its factorization.

491948027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748492.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 491948027 is about 22179.9014199793. The cubic root of 491948027 is about 789.4168783449.

The spelling of 491948027 in words is "four hundred ninety-one million, nine hundred forty-eight thousand, twenty-seven".