1043645423 has 4 divisors (see below), whose sum is σ = 1053978648. Its totient is φ = 1033312200.

The previous prime is 1043645413. The next prime is 1043645443. The reversal of 1043645423 is 3245463401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3245463401 = 101 ⋅32133301.

It is a cyclic number.

It is not a de Polignac number, because 1043645423 - 2¹² = 1043641327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1043645423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043645413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5166461 + ... + 5166662.

It is an arithmetic number, because the mean of its divisors is an integer number (263494662).

Almost surely, 2^1043645423 is an apocalyptic number.

1043645423 is a deficient number, since it is larger than the sum of its proper divisors (10333225).

1043645423 is a wasteful number, since it uses less digits than its factorization.

1043645423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10333224.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 1043645423 is about 32305.5014355140. The cubic root of 1043645423 is about 1014.3418036911.

The spelling of 1043645423 in words is "one billion, forty-three million, six hundred forty-five thousand, four hundred twenty-three".