1041644623 has 4 divisors (see below), whose sum is σ = 1041711328. Its totient is φ = 1041577920.

The previous prime is 1041644573. The next prime is 1041644627. The reversal of 1041644623 is 3264461401.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3264461401 = 43 ⋅75917707.

It is a cyclic number.

It is not a de Polignac number, because 1041644623 - 2²¹ = 1039547471 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 (1041644627) 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, 4063 + ... + 45823.

It is an arithmetic number, because the mean of its divisors is an integer number (260427832).

Almost surely, 2^1041644623 is an apocalyptic number.

1041644623 is a deficient number, since it is larger than the sum of its proper divisors (66705).

1041644623 is an equidigital number, since it uses as much as digits as its factorization.

1041644623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66704.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1041644623 is about 32274.5197175729. The cubic root of 1041644623 is about 1013.6931819300.

The spelling of 1041644623 in words is "one billion, forty-one million, six hundred forty-four thousand, six hundred twenty-three".