19413253073 has 4 divisors (see below), whose sum is σ = 19415232420. Its totient is φ = 19411273728.

The previous prime is 19413253019. The next prime is 19413253081. The reversal of 19413253073 is 37035231491.

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 10183231744 + 9230021329 = 100912^2 + 96073^2 .

It is a cyclic number.

It is not a de Polignac number, because 19413253073 - 2¹⁶ = 19413187537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19413253273) 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, 974888 + ... + 994601.

It is an arithmetic number, because the mean of its divisors is an integer number (4853808105).

Almost surely, 2^19413253073 is an apocalyptic number.

It is an amenable number.

19413253073 is a deficient number, since it is larger than the sum of its proper divisors (1979347).

19413253073 is an equidigital number, since it uses as much as digits as its factorization.

19413253073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979346.

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 19413253073 in words is "nineteen billion, four hundred thirteen million, two hundred fifty-three thousand, seventy-three".