1612081648 has 20 divisors (see below), whose sum is σ = 3174613528. Its totient is φ = 792826560.

The previous prime is 1612081633. The next prime is 1612081673. The reversal of 1612081648 is 8461802161.

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 3 ways as a sum of consecutive naturals, for example, 824886 + ... + 826837.

Almost surely, 2^1612081648 is an apocalyptic number.

It is an amenable number.

1612081648 is a deficient number, since it is larger than the sum of its proper divisors (1562531880).

1612081648 is a wasteful number, since it uses less digits than its factorization.

1612081648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651792 (or 1651786 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1612081648 is about 40150.7365810392. The cubic root of 1612081648 is about 1172.5436291111.

The spelling of 1612081648 in words is "one billion, six hundred twelve million, eighty-one thousand, six hundred forty-eight".