63155338 has 4 divisors (see below), whose sum is σ = 94733010. Its totient is φ = 31577668.

The previous prime is 63155333. The next prime is 63155341. The reversal of 63155338 is 83355136.

63155338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 63154809 + 529 = 7947^2 + 23^2 .

It is not an unprimeable number, because it can be changed into a prime (63155333) by changing a digit.

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, 15788833 + ... + 15788836.

Almost surely, 2^63155338 is an apocalyptic number.

63155338 is a deficient number, since it is larger than the sum of its proper divisors (31577672).

63155338 is a wasteful number, since it uses less digits than its factorization.

63155338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31577671.

The product of its digits is 32400, while the sum is 34.

The square root of 63155338 is about 7947.0332829302. The cubic root of 63155338 is about 398.2324887640.

The spelling of 63155338 in words is "sixty-three million, one hundred fifty-five thousand, three hundred thirty-eight".