638011058 has 4 divisors (see below), whose sum is σ = 957016590. Its totient is φ = 319005528.

The previous prime is 638010949. The next prime is 638011061. The reversal of 638011058 is 850110836.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 420537049 + 217474009 = 20507^2 + 14747^2 .

It is a super-2 number, since 2×638011058² = 814116220260558728, which contains 22 as substring.

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, 159502763 + ... + 159502766.

Almost surely, 2^638011058 is an apocalyptic number.

638011058 is a deficient number, since it is larger than the sum of its proper divisors (319005532).

638011058 is a wasteful number, since it uses less digits than its factorization.

638011058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319005531.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 638011058 is about 25258.8807748879. The cubic root of 638011058 is about 860.8802317980.

The spelling of 638011058 in words is "six hundred thirty-eight million, eleven thousand, fifty-eight".