538388308 has 12 divisors (see below), whose sum is σ = 942926292. Its totient is φ = 268980800.

The previous prime is 538388299. The next prime is 538388309. The reversal of 538388308 is 803883835.

It can be written as a sum of positive squares in 2 ways, for example, as 122146704 + 416241604 = 11052^2 + 20402^2 .

It is a super-2 number, since 2×538388308² = 579723940382205728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538388309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47593 + ... + 57808.

It is an arithmetic number, because the mean of its divisors is an integer number (78577191).

Almost surely, 2^538388308 is an apocalyptic number.

It is an amenable number.

538388308 is a deficient number, since it is larger than the sum of its proper divisors (404537984).

538388308 is a wasteful number, since it uses less digits than its factorization.

538388308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106682 (or 106680 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 538388308 is about 23203.1960729551. The cubic root of 538388308 is about 813.5143285418.

The spelling of 538388308 in words is "five hundred thirty-eight million, three hundred eighty-eight thousand, three hundred eight".