491452078 has 16 divisors (see below), whose sum is σ = 794482416. Its totient is φ = 226653120.

The previous prime is 491452033. The next prime is 491452079. The reversal of 491452078 is 870254194.

It is a self number, because there is not a number n which added to its sum of digits gives 491452078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491452079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32125 + ... + 44887.

It is an arithmetic number, because the mean of its divisors is an integer number (49655151).

Almost surely, 2^491452078 is an apocalyptic number.

491452078 is a deficient number, since it is larger than the sum of its proper divisors (303030338).

491452078 is a wasteful number, since it uses less digits than its factorization.

491452078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14259.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 491452078 is about 22168.7184564196. The cubic root of 491452078 is about 789.1515101024.

The spelling of 491452078 in words is "four hundred ninety-one million, four hundred fifty-two thousand, seventy-eight".