538018992 has 120 divisors (see below), whose sum is σ = 1822088736. Its totient is φ = 144672768.

The previous prime is 538018969. The next prime is 538018997. The reversal of 538018992 is 299810835.

It is a happy number.

538018992 is a `hidden beast` number, since 5 + 380 + 189 + 92 = 666.

It is not an unprimeable number, because it can be changed into a prime (538018997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1438 + ... + 32834.

Almost surely, 2^538018992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538018992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911044368).

538018992 is an abundant number, since it is smaller than the sum of its proper divisors (1284069744).

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

538018992 is a wasteful number, since it uses less digits than its factorization.

538018992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31435 (or 31426 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 538018992 is about 23195.2364075040. The cubic root of 538018992 is about 813.3282716398.

The spelling of 538018992 in words is "five hundred thirty-eight million, eighteen thousand, nine hundred ninety-two".