16958427393 has 4 divisors (see below), whose sum is σ = 22611236528. Its totient is φ = 11305618260.

The previous prime is 16958427373. The next prime is 16958427491. The reversal of 16958427393 is 39372485961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39372485961 = 3 ⋅13124161987.

It is not a de Polignac number, because 16958427393 - 2¹² = 16958423297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16958427313) 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, 2826404563 + ... + 2826404568.

It is an arithmetic number, because the mean of its divisors is an integer number (5652809132).

Almost surely, 2^16958427393 is an apocalyptic number.

It is an amenable number.

16958427393 is a deficient number, since it is larger than the sum of its proper divisors (5652809135).

16958427393 is an equidigital number, since it uses as much as digits as its factorization.

16958427393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652809134.

The product of its digits is 9797760, while the sum is 57.

The spelling of 16958427393 in words is "sixteen billion, nine hundred fifty-eight million, four hundred twenty-seven thousand, three hundred ninety-three".