19410075397 has 4 divisors (see below), whose sum is σ = 20551844556. Its totient is φ = 18268306240.

The previous prime is 19410075379. The next prime is 19410075401. The reversal of 19410075397 is 79357001491.

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 18249037921 + 1161037476 = 135089^2 + 34074^2 .

It is a cyclic number.

It is not a de Polignac number, because 19410075397 - 2²³ = 19401686789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19410075317) 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 3 ways as a sum of consecutive naturals, for example, 570884554 + ... + 570884587.

It is an arithmetic number, because the mean of its divisors is an integer number (5137961139).

Almost surely, 2^19410075397 is an apocalyptic number.

19410075397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

19410075397 is a deficient number, since it is larger than the sum of its proper divisors (1141769159).

19410075397 is a wasteful number, since it uses less digits than its factorization.

19410075397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141769158.

The product of its (nonzero) digits is 238140, while the sum is 46.

The spelling of 19410075397 in words is "nineteen billion, four hundred ten million, seventy-five thousand, three hundred ninety-seven".