10185913 has 4 divisors (see below), whose sum is σ = 10193040. Its totient is φ = 10178788.

The previous prime is 10185893. The next prime is 10185947. The reversal of 10185913 is 31958101.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31958101 = 7 ⋅4565443.

It is a cyclic number.

It is not a de Polignac number, because 10185913 - 2⁹ = 10185401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10185983) 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, 595 + ... + 4552.

It is an arithmetic number, because the mean of its divisors is an integer number (2548260).

Almost surely, 2^10185913 is an apocalyptic number.

It is an amenable number.

10185913 is a deficient number, since it is larger than the sum of its proper divisors (7127).

10185913 is an equidigital number, since it uses as much as digits as its factorization.

10185913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7126.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 10185913 is about 3191.5377171514. The cubic root of 10185913 is about 216.7704042356.

The spelling of 10185913 in words is "ten million, one hundred eighty-five thousand, nine hundred thirteen".