501998814 has 24 divisors (see below), whose sum is σ = 1151645040. Its totient is φ = 157489728.

The previous prime is 501998801. The next prime is 501998821. The reversal of 501998814 is 418899105.

It is a super-3 number, since 3×501998814³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 501998814.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 819954 + ... + 820565.

It is an arithmetic number, because the mean of its divisors is an integer number (47985210).

Almost surely, 2^501998814 is an apocalyptic number.

501998814 is an abundant number, since it is smaller than the sum of its proper divisors (649646226).

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

501998814 is a wasteful number, since it uses less digits than its factorization.

501998814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640544 (or 1640541 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 501998814 is about 22405.3300355072. The cubic root of 501998814 is about 794.7567595711.

The spelling of 501998814 in words is "five hundred one million, nine hundred ninety-eight thousand, eight hundred fourteen".