19541157453 has 12 divisors (see below), whose sum is σ = 28247795680. Its totient is φ = 13017432456.

The previous prime is 19541157451. The next prime is 19541157491. The reversal of 19541157453 is 35475114591.

19541157453 is a `hidden beast` number, since 1 + 9 + 5 + 41 + 157 + 453 = 666.

It is not a de Polignac number, because 19541157453 - 2¹ = 19541157451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19541157399 and 19541157408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19541157451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 821443 + ... + 844896.

Almost surely, 2^19541157453 is an apocalyptic number.

It is an amenable number.

19541157453 is a deficient number, since it is larger than the sum of its proper divisors (8706638227).

19541157453 is a wasteful number, since it uses less digits than its factorization.

19541157453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667648 (or 1667645 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The spelling of 19541157453 in words is "nineteen billion, five hundred forty-one million, one hundred fifty-seven thousand, four hundred fifty-three".