491633235 has 24 divisors (see below), whose sum is σ = 853332480. Its totient is φ = 261844992.

The previous prime is 491633213. The next prime is 491633237. The reversal of 491633235 is 532336194.

It is a happy number.

It is not a de Polignac number, because 491633235 - 2¹² = 491629139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 491633235.

It is not an unprimeable number, because it can be changed into a prime (491633237) 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 23 ways as a sum of consecutive naturals, for example, 27502 + ... + 41708.

It is an arithmetic number, because the mean of its divisors is an integer number (35555520).

Almost surely, 2^491633235 is an apocalyptic number.

491633235 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

491633235 is a deficient number, since it is larger than the sum of its proper divisors (361699245).

491633235 is a wasteful number, since it uses less digits than its factorization.

491633235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14987 (or 14984 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 491633235 is about 22172.8039498842. The cubic root of 491633235 is about 789.2484627618.

It can be divided in two parts, 49 and 1633235, that added together give a square (1633284 = 1278²).

The spelling of 491633235 in words is "four hundred ninety-one million, six hundred thirty-three thousand, two hundred thirty-five".