1044643554 has 40 divisors (see below), whose sum is σ = 2345457708. Its totient is φ = 347518080.

The previous prime is 1044643547. The next prime is 1044643571. The reversal of 1044643554 is 4553464401.

1044643554 is a `hidden beast` number, since 1 + 0 + 4 + 4 + 643 + 5 + 5 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 934708329 + 109935225 = 30573^2 + 10485^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78214 + ... + 90590.

Almost surely, 2^1044643554 is an apocalyptic number.

1044643554 is an abundant number, since it is smaller than the sum of its proper divisors (1300814154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1044643554 is a wasteful number, since it uses less digits than its factorization.

1044643554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12912 (or 12903 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 1044643554 is about 32320.9460566983. The cubic root of 1044643554 is about 1014.6650691041.

The spelling of 1044643554 in words is "one billion, forty-four million, six hundred forty-three thousand, five hundred fifty-four".