538445830 has 96 divisors (see below), whose sum is σ = 1101513600. Its totient is φ = 189236736.

The previous prime is 538445827. The next prime is 538445839. The reversal of 538445830 is 38544835.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538445839) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4939816 + ... + 4939924.

It is an arithmetic number, because the mean of its divisors is an integer number (11474100).

Almost surely, 2^538445830 is an apocalyptic number.

538445830 is an abundant number, since it is smaller than the sum of its proper divisors (563067770).

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

538445830 is a wasteful number, since it uses less digits than its factorization.

538445830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 538445830 is about 23204.4355673651. The cubic root of 538445830 is about 813.5432997658.

The spelling of 538445830 in words is "five hundred thirty-eight million, four hundred forty-five thousand, eight hundred thirty".