19097801 has 4 divisors (see below), whose sum is σ = 19113600. Its totient is φ = 19082004.

The previous prime is 19097789. The next prime is 19097803. The reversal of 19097801 is 10879091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10879091 = 311 ⋅34981.

It is a cyclic number.

It is not a de Polignac number, because 19097801 - 2¹⁸ = 18835657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19097803) 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 3 ways as a sum of consecutive naturals, for example, 5921 + ... + 8558.

It is an arithmetic number, because the mean of its divisors is an integer number (4778400).

Almost surely, 2^19097801 is an apocalyptic number.

It is an amenable number.

19097801 is a deficient number, since it is larger than the sum of its proper divisors (15799).

19097801 is a wasteful number, since it uses less digits than its factorization.

19097801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15798.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 19097801 is about 4370.1030880289. The cubic root of 19097801 is about 267.2972277627.

The spelling of 19097801 in words is "nineteen million, ninety-seven thousand, eight hundred one".