1043554440 has 64 divisors (see below), whose sum is σ = 3138082560. Its totient is φ = 277621760.

The previous prime is 1043554433. The next prime is 1043554441. The reversal of 1043554440 is 444553401.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1043554398 and 1043554407.

It is not an unprimeable number, because it can be changed into a prime (1043554441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 41632 + ... + 61808.

It is an arithmetic number, because the mean of its divisors is an integer number (49032540).

Almost surely, 2^1043554440 is an apocalyptic number.

1043554440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043554440 is an abundant number, since it is smaller than the sum of its proper divisors (2094528120).

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

1043554440 is a wasteful number, since it uses less digits than its factorization.

1043554440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20622 (or 20618 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 1043554440 is about 32304.0932390928. The cubic root of 1043554440 is about 1014.3123267122.

The spelling of 1043554440 in words is "one billion, forty-three million, five hundred fifty-four thousand, four hundred forty".