1641775456 has 12 divisors (see below), whose sum is σ = 3232245492. Its totient is φ = 820887712.

The previous prime is 1641775409. The next prime is 1641775483. The reversal of 1641775456 is 6545771461.

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 as a sum of consecutive naturals, namely, 25652710 + ... + 25652773.

It is an arithmetic number, because the mean of its divisors is an integer number (269353791).

Almost surely, 2^1641775456 is an apocalyptic number.

1641775456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1641775456 is a deficient number, since it is larger than the sum of its proper divisors (1590470036).

1641775456 is an equidigital number, since it uses as much as digits as its factorization.

1641775456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51305493 (or 51305485 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The square root of 1641775456 is about 40518.8284134672. The cubic root of 1641775456 is about 1179.6991131717.

The spelling of 1641775456 in words is "one billion, six hundred forty-one million, seven hundred seventy-five thousand, four hundred fifty-six".