536388642 has 20 divisors (see below), whose sum is σ = 1201908246. Its totient is φ = 178796160.

The previous prime is 536388631. The next prime is 536388649. The reversal of 536388642 is 246883635.

It is a happy number.

536388642 is a `hidden beast` number, since 5 + 3 + 638 + 8 + 6 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 522168201 + 14220441 = 22851^2 + 3771^2 .

It is not an unprimeable number, because it can be changed into a prime (536388649) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1655359 + ... + 1655682.

Almost surely, 2^536388642 is an apocalyptic number.

536388642 is an abundant number, since it is smaller than the sum of its proper divisors (665519604).

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

536388642 is a wasteful number, since it uses less digits than its factorization.

536388642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311055 (or 3311046 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 536388642 is about 23160.0656734820. The cubic root of 536388642 is about 812.5059020321.

The spelling of 536388642 in words is "five hundred thirty-six million, three hundred eighty-eight thousand, six hundred forty-two".