1045443656 has 96 divisors (see below), whose sum is σ = 2150064000. Its totient is φ = 476141952.

The previous prime is 1045443653. The next prime is 1045443661. The reversal of 1045443656 is 6563445401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045443653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13233425 + ... + 13233503.

It is an arithmetic number, because the mean of its divisors is an integer number (22396500).

Almost surely, 2^1045443656 is an apocalyptic number.

It is an amenable number.

1045443656 is an abundant number, since it is smaller than the sum of its proper divisors (1104620344).

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

1045443656 is a wasteful number, since it uses less digits than its factorization.

1045443656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 1045443656 is about 32333.3211408912. The cubic root of 1045443656 is about 1014.9240500653.

The spelling of 1045443656 in words is "one billion, forty-five million, four hundred forty-three thousand, six hundred fifty-six".