538491642 has 16 divisors (see below), whose sum is σ = 1159828320. Its totient is φ = 165689712.

The previous prime is 538491593. The next prime is 538491647. The reversal of 538491642 is 246194835.

It is a junction number, because it is equal to n+sod(n) for n = 538491594 and 538491603.

It is not an unprimeable number, because it can be changed into a prime (538491647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3451792 + ... + 3451947.

It is an arithmetic number, because the mean of its divisors is an integer number (72489270).

Almost surely, 2^538491642 is an apocalyptic number.

538491642 is an abundant number, since it is smaller than the sum of its proper divisors (621336678).

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

538491642 is a wasteful number, since it uses less digits than its factorization.

538491642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6903757.

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

The square root of 538491642 is about 23205.4226852260. The cubic root of 538491642 is about 813.5663717176.

The spelling of 538491642 in words is "five hundred thirty-eight million, four hundred ninety-one thousand, six hundred forty-two".