531949418 has 32 divisors (see below), whose sum is σ = 1071342720. Its totient is φ = 191309760.

The previous prime is 531949417. The next prime is 531949459. The reversal of 531949418 is 814949135.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (531949417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130853 + ... + 134856.

It is an arithmetic number, because the mean of its divisors is an integer number (33479460).

Almost surely, 2^531949418 is an apocalyptic number.

531949418 is an abundant number, since it is smaller than the sum of its proper divisors (539393302).

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

531949418 is a wasteful number, since it uses less digits than its factorization.

531949418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265742.

The product of its digits is 155520, while the sum is 44.

The square root of 531949418 is about 23064.0286593648. The cubic root of 531949418 is about 810.2582207770.

It can be divided in two parts, 531 and 949418, that added together give a palindrome (949949).

The spelling of 531949418 in words is "five hundred thirty-one million, nine hundred forty-nine thousand, four hundred eighteen".