19401101 has 4 divisors (see below), whose sum is σ = 19427100. Its totient is φ = 19375104.

The previous prime is 19401091. The next prime is 19401143. The reversal of 19401101 is 10110491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3798601 + 15602500 = 1949^2 + 3950^2 .

It is a cyclic number.

It is not a de Polignac number, because 19401101 - 2⁶ = 19401037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19401101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19401601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11846 + ... + 13383.

It is an arithmetic number, because the mean of its divisors is an integer number (4856775).

Almost surely, 2^19401101 is an apocalyptic number.

It is an amenable number.

19401101 is a deficient number, since it is larger than the sum of its proper divisors (25999).

19401101 is an equidigital number, since it uses as much as digits as its factorization.

19401101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25998.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 19401101 is about 4404.6680919225. The cubic root of 19401101 is about 268.7048212500.

Adding to 19401101 its reverse (10110491), we get a palindrome (29511592).

The spelling of 19401101 in words is "nineteen million, four hundred one thousand, one hundred one".