648183157 has 16 divisors (see below), whose sum is σ = 737821440. Its totient is φ = 565636608.

The previous prime is 648183143. The next prime is 648183167. The reversal of 648183157 is 751381846.

It is a cyclic number.

It is not a de Polignac number, because 648183157 - 2¹¹ = 648181109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648183127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6168 + ... + 36529.

It is an arithmetic number, because the mean of its divisors is an integer number (46113840).

Almost surely, 2^648183157 is an apocalyptic number.

It is an amenable number.

648183157 is a deficient number, since it is larger than the sum of its proper divisors (89638283).

648183157 is a wasteful number, since it uses less digits than its factorization.

648183157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42780.

The product of its digits is 161280, while the sum is 43.

The square root of 648183157 is about 25459.4414117828. The cubic root of 648183157 is about 865.4312647833.

The spelling of 648183157 in words is "six hundred forty-eight million, one hundred eighty-three thousand, one hundred fifty-seven".