495151649 has 8 divisors (see below), whose sum is σ = 513038760. Its totient is φ = 477501696.

The previous prime is 495151633. The next prime is 495151661. The reversal of 495151649 is 946151594.

It can be written as a sum of positive squares in 4 ways, for example, as 17073424 + 478078225 = 4132^2 + 21865^2 .

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 495151649 - 2⁴ = 495151633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495151619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55034 + ... + 63395.

It is an arithmetic number, because the mean of its divisors is an integer number (64129845).

Almost surely, 2^495151649 is an apocalyptic number.

It is an amenable number.

495151649 is a deficient number, since it is larger than the sum of its proper divisors (17887111).

495151649 is a wasteful number, since it uses less digits than its factorization.

495151649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118579.

The product of its digits is 194400, while the sum is 44.

The square root of 495151649 is about 22252.0032581339. The cubic root of 495151649 is about 791.1267631410.

The spelling of 495151649 in words is "four hundred ninety-five million, one hundred fifty-one thousand, six hundred forty-nine".