538349820 has 48 divisors (see below), whose sum is σ = 1513427328. Its totient is φ = 142984000.

The previous prime is 538349783. The next prime is 538349879. The reversal of 538349820 is 28943835.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2814 + ... + 32933.

It is an arithmetic number, because the mean of its divisors is an integer number (31529736).

Almost surely, 2^538349820 is an apocalyptic number.

It is an amenable number.

538349820 is an abundant number, since it is smaller than the sum of its proper divisors (975077508).

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

538349820 is a wasteful number, since it uses less digits than its factorization.

538349820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36010 (or 36008 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 538349820 is about 23202.3666896289. The cubic root of 538349820 is about 813.4949427286.

The spelling of 538349820 in words is "five hundred thirty-eight million, three hundred forty-nine thousand, eight hundred twenty".