491648097 has 16 divisors (see below), whose sum is σ = 677698560. Its totient is φ = 316828800.

The previous prime is 491648083. The next prime is 491648099. The reversal of 491648097 is 790846194.

It is not a de Polignac number, because 491648097 - 2⁷ = 491647969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491648099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4929 + ... + 31742.

It is an arithmetic number, because the mean of its divisors is an integer number (42356160).

Almost surely, 2^491648097 is an apocalyptic number.

It is an amenable number.

491648097 is a deficient number, since it is larger than the sum of its proper divisors (186050463).

491648097 is a wasteful number, since it uses less digits than its factorization.

491648097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36824.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 491648097 is about 22173.1390876439. The cubic root of 491648097 is about 789.2564156365.

The spelling of 491648097 in words is "four hundred ninety-one million, six hundred forty-eight thousand, ninety-seven".