491202149 has 8 divisors (see below), whose sum is σ = 495441408. Its totient is φ = 486980640.

The previous prime is 491202139. The next prime is 491202157. The reversal of 491202149 is 941202194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491202149 - 2⁴ = 491202133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491202139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54449 + ... + 62825.

It is an arithmetic number, because the mean of its divisors is an integer number (61930176).

Almost surely, 2^491202149 is an apocalyptic number.

It is an amenable number.

491202149 is a deficient number, since it is larger than the sum of its proper divisors (4239259).

491202149 is a wasteful number, since it uses less digits than its factorization.

491202149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 491202149 is about 22163.0807650922. The cubic root of 491202149 is about 789.0177125256.

The spelling of 491202149 in words is "four hundred ninety-one million, two hundred two thousand, one hundred forty-nine".