490938651 has 80 divisors (see below), whose sum is σ = 881073600. Its totient is φ = 266499072.

The previous prime is 490938601. The next prime is 490938653. The reversal of 490938651 is 156839094.

It is a happy number.

It is not a de Polignac number, because 490938651 - 2¹⁰ = 490937627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 490938597 and 490938606.

It is not an unprimeable number, because it can be changed into a prime (490938653) 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 79 ways as a sum of consecutive naturals, for example, 1200135 + ... + 1200543.

It is an arithmetic number, because the mean of its divisors is an integer number (11013420).

Almost surely, 2^490938651 is an apocalyptic number.

490938651 is a deficient number, since it is larger than the sum of its proper divisors (390134949).

490938651 is a wasteful number, since it uses less digits than its factorization.

490938651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 490938651 is about 22157.1354421098. The cubic root of 490938651 is about 788.8766017314.

The spelling of 490938651 in words is "four hundred ninety million, nine hundred thirty-eight thousand, six hundred fifty-one".