19426693 has 8 divisors (see below), whose sum is σ = 22823136. Its totient is φ = 16302000.

The previous prime is 19426681. The next prime is 19426747. The reversal of 19426693 is 39662491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19426693 - 2¹³ = 19418501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19426633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67783 + ... + 68068.

It is an arithmetic number, because the mean of its divisors is an integer number (2852892).

Almost surely, 2^19426693 is an apocalyptic number.

19426693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19426693 is a deficient number, since it is larger than the sum of its proper divisors (3396443).

19426693 is a wasteful number, since it uses less digits than its factorization.

19426693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135875.

The product of its digits is 69984, while the sum is 40.

The square root of 19426693 is about 4407.5722342351. The cubic root of 19426693 is about 268.8229188830.

The spelling of 19426693 in words is "nineteen million, four hundred twenty-six thousand, six hundred ninety-three".