491530154 has 8 divisors (see below), whose sum is σ = 737557920. Its totient is φ = 245677516.

The previous prime is 491530153. The next prime is 491530177. The reversal of 491530154 is 451035194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 491530154.

It is not an unprimeable number, because it can be changed into a prime (491530153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36524 + ... + 48135.

It is an arithmetic number, because the mean of its divisors is an integer number (92194740).

Almost surely, 2^491530154 is an apocalyptic number.

491530154 is a deficient number, since it is larger than the sum of its proper divisors (246027766).

491530154 is a wasteful number, since it uses less digits than its factorization.

491530154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87564.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 491530154 is about 22170.4793362706. The cubic root of 491530154 is about 789.1932981922.

The spelling of 491530154 in words is "four hundred ninety-one million, five hundred thirty thousand, one hundred fifty-four".