1608648531 has 16 divisors (see below), whose sum is σ = 2535801600. Its totient is φ = 887529888.

The previous prime is 1608648521. The next prime is 1608648553. The reversal of 1608648531 is 1358468061.

It is not a de Polignac number, because 1608648531 - 2¹⁰ = 1608647507 is a prime.

It is a super-2 number, since 2×1608648531² = 5175500192576915922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1608648521) 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, 1320121 + ... + 1321338.

It is an arithmetic number, because the mean of its divisors is an integer number (158487600).

Almost surely, 2^1608648531 is an apocalyptic number.

1608648531 is a deficient number, since it is larger than the sum of its proper divisors (927153069).

1608648531 is a wasteful number, since it uses less digits than its factorization.

1608648531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641498.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1608648531 is about 40107.9609429350. The cubic root of 1608648531 is about 1171.7106811368.

The spelling of 1608648531 in words is "one billion, six hundred eight million, six hundred forty-eight thousand, five hundred thirty-one".