26193919 has 2 divisors, whose sum is σ = 26193920. Its totient is φ = 26193918.

The previous prime is 26193917. The next prime is 26193943. The reversal of 26193919 is 91939162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26193919 - 2¹ = 26193917 is a prime.

It is a super-2 number, since 2×26193919² = 1372242785157122, which contains 22 as substring.

Together with 26193917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26193917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13096959 + 13096960.

It is an arithmetic number, because the mean of its divisors is an integer number (13096960).

Almost surely, 2^26193919 is an apocalyptic number.

26193919 is a deficient number, since it is larger than the sum of its proper divisors (1).

26193919 is an equidigital number, since it uses as much as digits as its factorization.

26193919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 40.

The square root of 26193919 is about 5117.9995115279. Note that the first 3 decimals coincide. The cubic root of 26193919 is about 296.9843016035.

The spelling of 26193919 in words is "twenty-six million, one hundred ninety-three thousand, nine hundred nineteen".