1648611487 has 8 divisors (see below), whose sum is σ = 1691336304. Its totient is φ = 1606431168.

The previous prime is 1648611473. The next prime is 1648611509. The reversal of 1648611487 is 7841168461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1648611487 - 2¹¹ = 1648609439 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 (1648611187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129988 + ... + 142105.

It is an arithmetic number, because the mean of its divisors is an integer number (211417038).

Almost surely, 2^1648611487 is an apocalyptic number.

1648611487 is a deficient number, since it is larger than the sum of its proper divisors (42724817).

1648611487 is an equidigital number, since it uses as much as digits as its factorization.

1648611487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272249.

The product of its digits is 258048, while the sum is 46.

The square root of 1648611487 is about 40603.0970124201. The cubic root of 1648611487 is about 1181.3341911308.

The spelling of 1648611487 in words is "one billion, six hundred forty-eight million, six hundred eleven thousand, four hundred eighty-seven".