19690853 has 16 divisors (see below), whose sum is σ = 24412416. Its totient is φ = 15465600.

The previous prime is 19690843. The next prime is 19690877. The reversal of 19690853 is 35809691.

It is a cyclic number.

It is not a de Polignac number, because 19690853 - 2⁶ = 19690789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19690853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19690823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13025 + ... + 14457.

It is an arithmetic number, because the mean of its divisors is an integer number (1525776).

Almost surely, 2^19690853 is an apocalyptic number.

19690853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19690853 is a deficient number, since it is larger than the sum of its proper divisors (4721563).

19690853 is a wasteful number, since it uses less digits than its factorization.

19690853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 19690853 is about 4437.4376615340. The cubic root of 19690853 is about 270.0359028617.

The spelling of 19690853 in words is "nineteen million, six hundred ninety thousand, eight hundred fifty-three".