19681053 has 32 divisors (see below), whose sum is σ = 32866560. Its totient is φ = 10214400.

The previous prime is 19681037. The next prime is 19681061. The reversal of 19681053 is 35018691.

It is not a de Polignac number, because 19681053 - 2⁴ = 19681037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19681153) 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 31 ways as a sum of consecutive naturals, for example, 9403 + ... + 11303.

It is an arithmetic number, because the mean of its divisors is an integer number (1027080).

Almost surely, 2^19681053 is an apocalyptic number.

It is an amenable number.

19681053 is a deficient number, since it is larger than the sum of its proper divisors (13185507).

19681053 is a wasteful number, since it uses less digits than its factorization.

19681053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 19681053 is about 4436.3332832419. Note that the first 3 decimals coincide. The cubic root of 19681053 is about 269.9910971001.

The spelling of 19681053 in words is "nineteen million, six hundred eighty-one thousand, fifty-three".