19927113 has 4 divisors (see below), whose sum is σ = 26569488. Its totient is φ = 13284740.

The previous prime is 19927109. The next prime is 19927121. The reversal of 19927113 is 31172991.

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: 31172991 = 3 ⋅10390997.

It is a cyclic number.

It is not a de Polignac number, because 19927113 - 2² = 19927109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19927133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3321183 + ... + 3321188.

It is an arithmetic number, because the mean of its divisors is an integer number (6642372).

Almost surely, 2^19927113 is an apocalyptic number.

It is an amenable number.

19927113 is a deficient number, since it is larger than the sum of its proper divisors (6642375).

19927113 is an equidigital number, since it uses as much as digits as its factorization.

19927113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6642374.

The product of its digits is 3402, while the sum is 33.

The square root of 19927113 is about 4463.9795026411. The cubic root of 19927113 is about 271.1116173523. Note that the first 3 decimals are identical.

The spelling of 19927113 in words is "nineteen million, nine hundred twenty-seven thousand, one hundred thirteen".