1612648905 has 24 divisors (see below), whose sum is σ = 2949596352. Its totient is φ = 737022816.

The previous prime is 1612648897. The next prime is 1612648927. The reversal of 1612648905 is 5098462161.

It is not a de Polignac number, because 1612648905 - 2³ = 1612648897 is a prime.

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 409536 + ... + 413454.

It is an arithmetic number, because the mean of its divisors is an integer number (122899848).

Almost surely, 2^1612648905 is an apocalyptic number.

1612648905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1612648905 is a deficient number, since it is larger than the sum of its proper divisors (1336947447).

1612648905 is an frugal number, since it uses more digits than its factorization.

1612648905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7853 (or 3934 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1612648905 is about 40157.8000517957. The cubic root of 1612648905 is about 1172.6811439783.

The spelling of 1612648905 in words is "one billion, six hundred twelve million, six hundred forty-eight thousand, nine hundred five".