491249650 has 24 divisors (see below), whose sum is σ = 925297920. Its totient is φ = 194010960.

The previous prime is 491249597. The next prime is 491249657. The reversal of 491249650 is 56942194.

491249650 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (491249657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58234 + ... + 66133.

It is an arithmetic number, because the mean of its divisors is an integer number (38554080).

Almost surely, 2^491249650 is an apocalyptic number.

491249650 is a deficient number, since it is larger than the sum of its proper divisors (434048270).

491249650 is a wasteful number, since it uses less digits than its factorization.

491249650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124458 (or 124453 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 491249650 is about 22164.1523636705. The cubic root of 491249650 is about 789.0431453149.

The spelling of 491249650 in words is "four hundred ninety-one million, two hundred forty-nine thousand, six hundred fifty".