1120644455 has 32 divisors (see below), whose sum is σ = 1597968000. Its totient is φ = 753881856.

The previous prime is 1120644443. The next prime is 1120644461. The reversal of 1120644455 is 5544460211.

It is not a de Polignac number, because 1120644455 - 2¹⁰ = 1120643431 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 84731 + ... + 97059.

It is an arithmetic number, because the mean of its divisors is an integer number (49936500).

Almost surely, 2^1120644455 is an apocalyptic number.

1120644455 is a deficient number, since it is larger than the sum of its proper divisors (477323545).

1120644455 is an equidigital number, since it uses as much as digits as its factorization.

1120644455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12408 (or 12394 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1120644455 is about 33476.0280648705. The cubic root of 1120644455 is about 1038.6979684154.

The spelling of 1120644455 in words is "one billion, one hundred twenty million, six hundred forty-four thousand, four hundred fifty-five".