1038694423 has 4 divisors (see below), whose sum is σ = 1118594008. Its totient is φ = 958794840.

The previous prime is 1038694417. The next prime is 1038694427. The reversal of 1038694423 is 3244968301.

It is a happy number.

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 1038694423 - 2²¹ = 1036597271 is a prime.

It is a super-2 number, since 2×1038694423² = 2157772208742605858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038694427) 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, 39949773 + ... + 39949798.

It is an arithmetic number, because the mean of its divisors is an integer number (279648502).

Almost surely, 2^1038694423 is an apocalyptic number.

1038694423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1038694423 is a deficient number, since it is larger than the sum of its proper divisors (79899585).

1038694423 is an equidigital number, since it uses as much as digits as its factorization.

1038694423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79899584.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 1038694423 is about 32228.7825243213. The cubic root of 1038694423 is about 1012.7352655142.

The spelling of 1038694423 in words is "one billion, thirty-eight million, six hundred ninety-four thousand, four hundred twenty-three".