1045443655 has 4 divisors (see below), whose sum is σ = 1254532392. Its totient is φ = 836354920.

The previous prime is 1045443653. The next prime is 1045443661. The reversal of 1045443655 is 5563445401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5563445401 = 881 ⋅6314921.

It is not a de Polignac number, because 1045443655 - 2¹ = 1045443653 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 104544361 + ... + 104544370.

It is an arithmetic number, because the mean of its divisors is an integer number (313633098).

Almost surely, 2^1045443655 is an apocalyptic number.

1045443655 is a deficient number, since it is larger than the sum of its proper divisors (209088737).

1045443655 is an equidigital number, since it uses as much as digits as its factorization.

1045443655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209088736.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 1045443655 is about 32333.3211254272. The cubic root of 1045443655 is about 1014.9240497417.

The spelling of 1045443655 in words is "one billion, forty-five million, four hundred forty-three thousand, six hundred fifty-five".