19798101 has 20 divisors (see below), whose sum is σ = 30863712. Its totient is φ = 12623688.

The previous prime is 19798091. The next prime is 19798109. The reversal of 19798101 is 10189791.

It is not a de Polignac number, because 19798101 - 2⁵ = 19798069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19798109) 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 19 ways as a sum of consecutive naturals, for example, 3451 + ... + 7176.

Almost surely, 2^19798101 is an apocalyptic number.

It is an amenable number.

19798101 is a deficient number, since it is larger than the sum of its proper divisors (11065611).

19798101 is a wasteful number, since it uses less digits than its factorization.

19798101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662 (or 10653 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 19798101 is about 4449.5057028843. The cubic root of 19798101 is about 270.5252737355.

The spelling of 19798101 in words is "nineteen million, seven hundred ninety-eight thousand, one hundred one".