648163458 has 20 divisors (see below), whose sum is σ = 1452366630. Its totient is φ = 216054432.

The previous prime is 648163457. The next prime is 648163487. The reversal of 648163458 is 854361846.

648163458 is a `hidden beast` number, since 6 + 4 + 8 + 1 + 634 + 5 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 431102169 + 217061289 = 20763^2 + 14733^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (648163457) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2000343 + ... + 2000666.

Almost surely, 2^648163458 is an apocalyptic number.

648163458 is an abundant number, since it is smaller than the sum of its proper divisors (804203172).

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

648163458 is a wasteful number, since it uses less digits than its factorization.

648163458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4001023 (or 4001014 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 648163458 is about 25459.0545386116. The cubic root of 648163458 is about 865.4224975581.

The spelling of 648163458 in words is "six hundred forty-eight million, one hundred sixty-three thousand, four hundred fifty-eight".