1038430823 has 4 divisors (see below), whose sum is σ = 1038502728. Its totient is φ = 1038358920.

The previous prime is 1038430801. The next prime is 1038430837. The reversal of 1038430823 is 3280348301.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1038430823 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 1038430823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038430223) 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, 5936 + ... + 45957.

It is an arithmetic number, because the mean of its divisors is an integer number (259625682).

Almost surely, 2^1038430823 is an apocalyptic number.

1038430823 is a deficient number, since it is larger than the sum of its proper divisors (71905).

1038430823 is an equidigital number, since it uses as much as digits as its factorization.

1038430823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71904.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1038430823 is about 32224.6927526082. The cubic root of 1038430823 is about 1012.6495875720.

The spelling of 1038430823 in words is "one billion, thirty-eight million, four hundred thirty thousand, eight hundred twenty-three".