19408738097 has 8 divisors (see below), whose sum is σ = 22182260352. Its totient is φ = 16635427200.

The previous prime is 19408738087. The next prime is 19408738183. The reversal of 19408738097 is 79083780491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19408738097 - 2⁴ = 19408738081 is a prime.

It is a super-2 number, since 2×19408738097² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19408738087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310772 + ... + 367962.

It is an arithmetic number, because the mean of its divisors is an integer number (2772782544).

Almost surely, 2^19408738097 is an apocalyptic number.

It is an amenable number.

19408738097 is a deficient number, since it is larger than the sum of its proper divisors (2773522255).

19408738097 is an equidigital number, since it uses as much as digits as its factorization.

19408738097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105679.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 19408738097 in words is "nineteen billion, four hundred eight million, seven hundred thirty-eight thousand, ninety-seven".