491071950 has 48 divisors (see below), whose sum is σ = 1353179760. Its totient is φ = 130952160.

The previous prime is 491071943. The next prime is 491071969. The reversal of 491071950 is 59170194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180529 + ... + 183228.

It is an arithmetic number, because the mean of its divisors is an integer number (28191245).

Almost surely, 2^491071950 is an apocalyptic number.

491071950 is an abundant number, since it is smaller than the sum of its proper divisors (862107810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491071950 is a wasteful number, since it uses less digits than its factorization.

491071950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363778 (or 363767 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 491071950 is about 22160.1432757101. The cubic root of 491071950 is about 788.9479935071.

The spelling of 491071950 in words is "four hundred ninety-one million, seventy-one thousand, nine hundred fifty".