1044542623 has 4 divisors (see below), whose sum is σ = 1046086200. Its totient is φ = 1042999048.

The previous prime is 1044542593. The next prime is 1044542641. The reversal of 1044542623 is 3262454401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1044542623 - 2¹³ = 1044534431 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 (1044542693) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 770773 + ... + 772126.

It is an arithmetic number, because the mean of its divisors is an integer number (261521550).

Almost surely, 2^1044542623 is an apocalyptic number.

1044542623 is a deficient number, since it is larger than the sum of its proper divisors (1543577).

1044542623 is an equidigital number, since it uses as much as digits as its factorization.

1044542623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543576.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1044542623 is about 32319.3846321368. The cubic root of 1044542623 is about 1014.6323898685.

The spelling of 1044542623 in words is "one billion, forty-four million, five hundred forty-two thousand, six hundred twenty-three".