495491903 has 8 divisors (see below), whose sum is σ = 502403616. Its totient is φ = 488620800.

The previous prime is 495491849. The next prime is 495491957. The reversal of 495491903 is 309194594.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (495491849) and next prime (495491957).

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 495491903 - 2¹⁶ = 495426367 is a prime.

It is a super-2 number, since 2×495491903² = 491024451877122818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495491993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14843 + ... + 34803.

It is an arithmetic number, because the mean of its divisors is an integer number (62800452).

Almost surely, 2^495491903 is an apocalyptic number.

495491903 is a deficient number, since it is larger than the sum of its proper divisors (6911713).

495491903 is a wasteful number, since it uses less digits than its factorization.

495491903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20305.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 495491903 is about 22259.6474140989. The cubic root of 495491903 is about 791.3079348495.

The spelling of 495491903 in words is "four hundred ninety-five million, four hundred ninety-one thousand, nine hundred three".