19493043453 has 48 divisors (see below), whose sum is σ = 31042327680. Its totient is φ = 11713680000.

The previous prime is 19493043439. The next prime is 19493043503. The reversal of 19493043453 is 35434039491.

It is a happy number.

19493043453 is a `hidden beast` number, since 194 + 9 + 3 + 0 + 4 + 3 + 453 = 666.

It is not a de Polignac number, because 19493043453 - 2¹⁴ = 19493027069 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19493043399 and 19493043408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19493043433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1033003 + ... + 1051703.

It is an arithmetic number, because the mean of its divisors is an integer number (646715160).

Almost surely, 2^19493043453 is an apocalyptic number.

19493043453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19493043453 is a deficient number, since it is larger than the sum of its proper divisors (11549284227).

19493043453 is a wasteful number, since it uses less digits than its factorization.

19493043453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18930 (or 18927 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 19493043453 in words is "nineteen billion, four hundred ninety-three million, forty-three thousand, four hundred fifty-three".