538540466 has 4 divisors (see below), whose sum is σ = 807810702. Its totient is φ = 269270232.

The previous prime is 538540459. The next prime is 538540477. The reversal of 538540466 is 664045835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 664045835 = 5 ⋅132809167.

It can be written as a sum of positive squares in only one way, i.e., 354531241 + 184009225 = 18829^2 + 13565^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134635115 + ... + 134635118.

Almost surely, 2^538540466 is an apocalyptic number.

538540466 is a deficient number, since it is larger than the sum of its proper divisors (269270236).

538540466 is a wasteful number, since it uses less digits than its factorization.

538540466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269270235.

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 538540466 is about 23206.4746568711. The cubic root of 538540466 is about 813.5909591398.

The spelling of 538540466 in words is "five hundred thirty-eight million, five hundred forty thousand, four hundred sixty-six".