648815182 has 16 divisors (see below), whose sum is σ = 1018773504. Its totient is φ = 309519000.

The previous prime is 648815177. The next prime is 648815227. The reversal of 648815182 is 281518846.

It is a super-2 number, since 2×648815182² = 841922280787386248, which contains 22 as substring.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 69294 + ... + 78097.

It is an arithmetic number, because the mean of its divisors is an integer number (63673344).

Almost surely, 2^648815182 is an apocalyptic number.

648815182 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

648815182 is a deficient number, since it is larger than the sum of its proper divisors (369958322).

648815182 is a wasteful number, since it uses less digits than its factorization.

648815182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147495.

The product of its digits is 122880, while the sum is 43.

The square root of 648815182 is about 25471.8507768870. The cubic root of 648815182 is about 865.7124592296.

The spelling of 648815182 in words is "six hundred forty-eight million, eight hundred fifteen thousand, one hundred eighty-two".