8518863554 has 4 divisors (see below), whose sum is σ = 12778295334. Its totient is φ = 4259431776.

The previous prime is 8518863547. The next prime is 8518863559. The reversal of 8518863554 is 4553688158.

It is a happy number.

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., 4586946529 + 3931917025 = 67727^2 + 62705^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8518863496 and 8518863505.

It is not an unprimeable number, because it can be changed into a prime (8518863559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129715887 + ... + 2129715890.

Almost surely, 2^8518863554 is an apocalyptic number.

8518863554 is a deficient number, since it is larger than the sum of its proper divisors (4259431780).

8518863554 is a wasteful number, since it uses less digits than its factorization.

8518863554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259431779.

The product of its digits is 4608000, while the sum is 53.

The square root of 8518863554 is about 92297.6898627479. The cubic root of 8518863554 is about 2042.3361320383.

The spelling of 8518863554 in words is "eight billion, five hundred eighteen million, eight hundred sixty-three thousand, five hundred fifty-four".